We compared the results to findings from developmental attentiona

We compared the results to findings from developmental attentional dyslexia. Whereas both populations make between-word migrations, they crucially differ in the type and distribution of errors. In developmental attentional dyslexia, omission of identical letters that appear in the same position

in the two words is prevalent, but it was rare in skilled reading. Other errors such as intrusions and buffer migrations also happened only in dyslexia but not in skilled reading. The different error patterns may suggest that different mechanisms underlie the incorrect reading in short exposure and the reading impairment in attentional dyslexia. Furthermore, the abundance of find more between-word TPCA-1 datasheet migrations and the absence of letter position errors within words support that notion of two separate functions, one for letter-to-word binding, the other for letter position encoding. (C) 2010 Elsevier Ltd. All rights reserved.”
“To compare standard PCR/cloning and single genome sequencing (SGS) in their ability to reflect actual intra-patient polymorphism of HIV-1 populations, a total of 530 HIV-1 pro-pol sequences obtained by both sequencing techniques from a set of 17 ART naive patient specimens was analyzed. For each specimen, 12 and 15 sequences, on average, were characterized

by the two techniques. Using phylogenetic analysis, tests for panmixia and entropy, and Bland-Altman plots, no difference in population structure or genetic diversity eltoprazine was shown in 14 of the 17 subjects. Evidence of sampling bias by the presence of subsets of identical sequences was found by either method. Overall, the study shows that neither method was more biased than the other, and providing that an adequate number of PCR templates is analyzed, and that the bulk sequencing captures the diversity of the viral population, either

method is likely to provide a similar measure of population diversity. (C) 2010 Elsevier B.V. All rights reserved.”
“Amelioration of the rightward spatial attention bias in patients with hemispatial neglect following manipulations of non-spatial attention suggests that spatial attention and mechanisms related to the regulation of attention are interrelated. Studies in normal, healthy subjects have shown similar modulation in spatial bias following tonic and phasic changes in attention suggesting that this interaction is a general mechanism of attention rather than a curiosity of the neglect disorder. The current study examined this attentional interaction to determine if perceptual processes favoring one hemisphere over the other are affected by this relationship. Participants first made rapid discriminations of Navon figures presented at central fixation.

The case of gene susceptibility association with increased lung c

The case of gene susceptibility association with increased lung cancer frequency was used to demonstrate this methodology. Results of Markov chain Monte Carlo (MCMC) iterations provided a more precise estimation find more of the regression coefficient in a logistic model with informative prior distribution compared to the noninformative

prior distribution model. In situations where similar historical data are available, it is proposed to include as much relevant information as previously published results in the analysis of current data.”
“The major aim of this study was to elucidate the relationship between nitric oxide (NO) and generalized epilepsy. Mice lacking the neuronal nitric oxide synthase (nNOS) gene (nNOS(-/-)) were used in this study to determine the relationship between nNOS a and NO in pentylentetrazole (PTZ)-induced convulsions. nNOS(-/-) mice exhibited severe convulsions following injection with a subconvulsive dose of PTZ (40 mg/kg i.p.) and convulsive doses were lethal in all of the mice (60 mg/kg

i.p.) following tonic convulsions. The results were confirmed by using selective nNOS inhibitors in wild-type (nNOS(+/+)) mice. The higher doses of the nNOS inhibitors 1-[2-(trifluoromethyl)phenyl] imidazole (TRIM) and 3-bromo-7-nitroindazole (3Br7NI) inhibited clonic-tonic convulsions induced by a convulsive dose of PTZ (60 mg/kg) in nNOS(+/+) mice. In contrast, either TRIM or 3Br7NI at lower doses enhanced convulsions following injection with a subconvulsive dose of PTZ

(40 mg/kg) in nNOS(+/+) mice similar to nNOS(-/-) mice treated with PTZ. Such a proconvulsant effect was observed in nNOS(+/+) Bortezomib mice pretreated with nNOS inhibitors but not other NOS inhibitors. These results indicate that NO may be regarded as an anticonvulsant or a proconvulsant substance in relation to convulsions induced by PTZ in mice. Pretreatment with N-methyl-D-aspartate (NMDA) receptor antagonists (5S, 10R)-(+)-5-methyl-10,11-dihydro-5H-dibenzo[a,d]-cyclohepten-5,10-imine Chlormezanone maleate (MK-801), (E)-(+/-)-2-amino-4-methyl-5-phospho no-3-pentenoic acid ethyl ester, CGP39551) and DL-alpha-amino3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor antagonist (2,3-dioxo-6-nitro-1,2,3,4-tetrahydrobenzo-[f]quinoxaline-7-sulfonamide, NBQX) inhibited a subconvulsive dose of PTZ-induced convulsions in nNOS(-/-) mice, demonstrating that convulsions induced by PTZ are modulated by endogenous NO production and ionotropic glutamate receptor-mediated stimulation. These results suggest a negative or positive modulation of neuronal interactions by basal or enhanced NO production, respectively. (C) 2009 IBRO. Published by Elsevier Ltd. All rights reserved.”
“Studies on mutations and mutation frequencies of the MSH6 gene, which mainly focus on new types of mutations in small samples, have been published ever since the first report of MSH6 mutation in two atypical hereditary non-polyposis colorectal cancer patients. However, the results remain inconsistent.

Both VL and SOL underwent in BR decrements of similar to 15% in c

Both VL and SOL underwent in BR decrements of similar to 15% in cross-sectional area and of similar to 22% in maximal torque that were prevented by RVE. Myosin heavy chain distribution showed increased type I and decreased this website type IIA in BR both in VL and in SOL, the opposite with RVE. A substantial downregulation

of proteins involved in aerobic metabolism characterized both in SOL and VL in BR. RVE reversed the pattern more in VL than in SOL, whereas proteins involved in anaerobic glycolysis were upregulated. Proteins from the Z-disk region and from costamers were differently dysregulated during bed rest (both BR and RVE), particularly in VL.”
“Enhanced light sensitivity is a common feature of many neuro-ophthalmic conditions and some chronic headaches. Previously we reported that the bright light-evoked increases in trigeminal brainstem neural activity and lacrimation depended on a neurovascular link within the eye (Okamoto et al., 2012). However, the supraspinal pathways necessary for these light-evoked responses are not well defined. To assess the contribution of the posterior hypothalamic area (PH), a brain region closely associated with control of autonomic outflow, we injected bicuculline methiodide (BMI), a GABAa receptor antagonist, into the PH and determined its effect on the encoding

properties of ocular neurons at the ventrolateral trigeminal interpolaris/caudalis transition (Vi/Vc) and caudalis/upper cervical cord Depsipeptide junction (Vc/C1) regions and on reflex lacrimation in male rats under isoflurane anesthesia. BMI markedly reduced light-evoked (>80%) responses of Vi/Vc and Vc/C1 neurons at 10 min with partial recovery by 50 min after injection. BMI also reduced (>35%) the convergent cutaneous receptive field

area of Vi/Vc and Vc/C1 ocular neurons indicating that both intra-ocular and periorbital cutaneous inputs were affected by changes in PH outflow. Light-evoked lacrimation was reduced by >35% at 10 min after BMI, while resting mean arterial pressure increased promptly and remained elevated (>20 mmHg) throughout the 50-min post-injection period. These, Quinapyramine results suggested that PH stimulation, acting in part through increased sympathetic activity, significantly inhibited light- and facial skin-evoked activity of ocular neurons at the Vi/Vc and Vc/C1 region. These data provide further support for the hypothesis that autonomic outflow plays a critical role in mediating light-evoked trigeminal brainstem neural activity and reflex lacrimation. (C) 2013 IBRO. Published by Elsevier Ltd. All rights reserved.”
“Purpose: There are no current guidelines for diagnosing and managing mild prenatal hydronephrosis. Variations in physician approach make it difficult to analyze outcomes and establish optimal management.

Because ADO effects in standard solution occurred at doses that a

Because ADO effects in standard solution occurred at doses that are notably higher than those occurring in vivo, we hypothesize that newborn rat locomotor networks are rather insensitive to this selleck neuromodulator. (C) 2012 IBRO. Published by Elsevier Ltd. All rights reserved.”
“Background Moderate differences in efficacy between adjuvant chemotherapy regimens for breast cancer are plausible, and could affect treatment choices. We sought any such differences.

Methods We undertook individual-patient-data meta-analyses of the randomised trials comparing: any taxane-plus-anthracycline-based regimen versus

the same, or more, non-taxane chemotherapy (n=44 000); one anthracycline-based regimen versus another (n=7000) or versus cyclo phosphamide, methotrexate,

and fluorouracil (CMF; n=18 000); and polychemotherapy Tozasertib versus no chemotherapy (n=32 000). The scheduled dosages of these three drugs and of the anthracyclines doxorubicin (A) and epirubicin (E) were used to define standard CMF, standard 4AC, and CAF and CEF. Log-rank breast cancer mortality rate ratios (RRs) are reported.

Findings In trials adding four separate cycles of a taxane to a fixed anthracycline-based control regimen, extending treatment duration, breast cancer mortality was reduced (RR 0.86, SE 0.04, two-sided significance [2p]=0.0005). In trials with four such extra cycles of a taxane counterbalanced in controls by extra cycles of other cytotoxic

drugs, roughly doubling non-taxane dosage, there was no significant difference (RR 0.94, SE 0.06, 2p=0.33). Trials with CMF-treated controls showed that standard 4AC and standard CMF were equivalent (RR 0.98, SE 0.05, 2p=0.67), but that anthracycline-based regimens with substantially higher cumulative dosage than standard 4AC (eg, CAF or CEF) were superior to standard CMF (RR 0.78, SE 0.06, 2p=0.0004). Trials versus no chemotherapy also suggested greater mortality reductions with CAF (RR 0.64, SE 0.09, 2p<0.0001) than with standard 4AC (RR 0.78, SE 0.09, 2p=0.01) or standard CMF (RR 0.76, SE 0.05, 2p<0.0001). In all meta-analyses involving taxane-based Dichloromethane dehalogenase or anthracycline-based regimens, proportional risk reductions were little affected by age, nodal status, tumour diameter or differentiation (moderate or poor; few were well differentiated), oestrogen receptor status, or tamoxifen use. Hence, largely independently of age (up to at least 70 years) or the tumour characteristics currently available to us for the patients selected to be in these trials, some taxane-plus-anthracycline-based or higher-cumulative-dosage anthracycline-based regimens (not requiring stem cells) reduced breast cancer mortality by, on average, about one-third. 10-year overall mortality differences paralleled breast cancer mortality differences, despite taxane, anthracycline, and other toxicities.

4 (19 7-23 2) The excess mortality among smokers (in comparison

4 (19.7-23.2). The excess mortality among smokers (in comparison with neversmokers) was mainly from diseases that, like lung cancer, can be caused by smoking. Among ex-smokers who had stopped permanently at ages 25-34 years or at ages 35-44 years, the respective relative risks were 1.05 (95% CI 1.00-1.11) and 1.20 (1.14-1.26) for all-cause mortality and 1.84 (1.45-2.34) and 3.34 (2.76-4.03) for lung cancer mortality. Thus, although some excess mortality remains among these long-term ex-smokers, it is only 3% and 10% of the excess mortality among continuing smokers. If combined with 2010 UK national death rates, tripled mortality rates among smokers indicate 53%

of smokers and 22% of never-smokers dying before age 80 years, and an 11-year lifespan difference.

Interpretation Among UK women, two-thirds find more PF299 of all deaths of smokers in their 50s, 60s, and 70s are caused by smoking; smokers lose at least 10 years of lifespan. Although the hazards of smoking until age 40 years and then stopping are substantial, the hazards of continuing are ten times greater. Stopping before age 40 years (and preferably well before age 40 years) avoids more than 90% of the excess mortality caused by continuing smoking; stopping before age 30 years avoids more than 97% of it.”
“Background: Cardiac magnetic resonance imaging (CMR) has been intensely

researched in recent years, and its high diagnostic accuracy for myocardial ischemia has been demonstrated. However, its prognostic information is very limited.

Aim: We sought to assess the value of adenosine stress myocardial perfusion by CMR in predicting cardiac events in patients with known or suspected coronary artery disease (CAD).

Design: Retrospective study.

Methods: From January 2003 to December 2008, we retrospectively reviewed consecutive patients with or without history of CAD referred for evaluation

of suspected myocardial ischemia who had undergone adenosine stress CMR in our hospital. End points were cardiac death or non-fatal myocardial infarction (MI).

Results: After a mean follow-up of 3.2 +/- 1.6 years in 203 patients, 15 (7.4%) second cardiac events occurred. The 4-year event-free survival was 96.2% for patients with normal stress CMR perfusion and 71.5% for those with abnormal stress CMR perfusion. Univariate analysis showed that both adenosine-induced reversible perfusion defect and delayed gadolinium enhancement by CMR were significant predictors of cardiac events [Hazard ratio (HR) 9.31; 95% Confidence Interval (95% CI) 3.18-27.3; and HR 9.24; 95% CI 3.27-26.08; P < 0.001, respectively). By multivariate analysis, adenosine-induced reversible perfusion defect remained an independent predictor of cardiac events (HR 7.77; 95% CI 2.50-24.18; P < 0.001).

In this study, we report a method that allows detection and visua

In this study, we report a method that allows detection and visualization of the subcellular distribution of glutathione in Synechocystis sp. This method is based on immunogold cytochemistry with glutathione and cysteine antisera and computer-supported transmission

electron microscopy. Labeling of glutathione and cysteine was restricted to the cytosol and interthylakoidal spaces. Glutathione and cysteine could not be detected in carboxysomes, cyanophycin granules, cell walls, intrathylakoidal spaces, periplasm, and vacuoles. The accuracy of the glutathione Mdm2 antagonist and cysteine labeling is supported by two observations. First, preadsorption of the antiglutathione and anticysteine antisera with glutathione and cysteine, respectively, reduced the density of the gold particles to background levels. Second, labeling of glutathione and cysteine was strongly decreased by 98.5% and 100%, respectively, in Synechocystis sp. cells grown on media without sulfur. This study indicates a strong similarity of the subcellular distribution of glutathione and cysteine in cyanobacteria and plastids of plants and provides a deeper insight into glutathione metabolism in bacteria.”
“Objective:

Exercise therapy is a common intervention for the management of intermittent Selleck OSI-906 claudication (IC). However, considerable uncertainty remains about the effect of different exercise components such as intensity, duration, or content of the exercise programs. The aim of this study was to assess the effectiveness of supervised walking therapy (SWT) as treatment in patients with IC and to update and identify the most important exercise components resulting in an optimal training protocol for patients with IC.

Methods: A systematic literature search using MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials databases was performed. Randomized controlled trials (RCTs) published between January 1966 and February 2012 were included if they evaluated the effectiveness of SWT. Predefined exercise components were extracted,

including treadmill use during training, claudication RVX-208 pain end point used during walking, length of the SWT program, and total training volume. A meta-analysis and meta-regression was performed to evaluate the weighted mean difference in maximum walking distance (MWD) and pain-free walking distance (PFWD) between SWT and noninterventional observation.

Results: Twenty-five RCTs (1054 patients) comparing SWT vs noninterventional observation showed a weighted mean difference of 180 meters (95% confidence interval, 130-230 meters) in MWD and 128 meters (95% confidence interval, 92-165 meters) in PFWD, both in favor of the SWT group. In multivariable meta-regression analysis, none of the predefined exercise components were independently associated with significant improvements in MWD or PFWD.

Conclusions: SWT is effective in improving MWD and PFWD in patients with IC.

(C) 2013 Elsevier Ltd All rights reserved “
“Typical late e

(C) 2013 Elsevier Ltd. All rights reserved.”
“Typical late embryogenesis abundant (LEA) proteins accumulate in response to water deficit imposed by the environment or by plant developmental programs. Because of their physicochemical properties, they can be considered as hydrophilins and as a paradigm of intrinsically unstructured proteins (IUPs) in plants. To study their biophysical and biochemical characteristics large quantities of highly purified protein are required. In this work, we report a fast and simple purification method for non-acidic recombinant LEA proteins that does not need the addition of tags and that preserves their in vitro protective activity. The

method is based on the enrichment of the protein of interest by boiling the bacterial protein extract, followed by a differential precipitation with trichloroacetic acid (TCA). Using find more this procedure we have obtained highly pure recombinant LEA proteins of groups 1, 3,

and 4 and one recombinant bacterial hydrophilin. Thiazovivin supplier This protocol will facilitate the purification of this type of IUPs, and could be particularly useful in proteomic projects/analyses. (C) 2011 Elsevier Inc. All rights reserved.”
“The study of human crime and violence represents a flashpoint for discussion across academia. Multiple theories exist pertaining to the topic, all aimed at organizing numerous findings surrounding correlates of antisocial behavior. Along these lines, Moffitt’s developmental taxonomy Rutecarpine has emerged as a theory well supported by empirical research. Noticeably absent, though, has been an effort to apply an evolutionary framework to Moffitt’s dual taxonomy of offending. With this in mind, the current

study is intended to examine Moffitt’s different typologies in the context of Rushton’s Differential K theory (an adaptation of r-K selection from life history theory). Our findings suggest that life-course persistent offending may represent a viable reproductive strategy characterized by higher levels of sexual involvement over the life-course. (C) 2013 Elsevier Ltd. All rights reserved.”
“The L1 protein is a major component of prophylactic human papillomavirus (HPV) vaccines. Little effort has been made to improve the productivity of L1 protein by optimizing cell culture conditions although the high price of the vaccines is considered one of the factors limiting its widespread use. In biopharmaceutical manufacturing, strategies for optimizing culture conditions tend to focus on improvements in upstream processing rather than final yield because of the complexities of purification procedures. In this study, we investigated L1 protein productivity as a function of the composition of the carbon source and the point of cell harvesting in the Saccharomyces cerevisiae expression system.

The methodology and findings of these studies were critically rev

The methodology and findings of these studies were critically reviewed and discussed. Because of the small number of studies, meta-analysis was only conducted for studies that used behavioral PM

https://www.selleckchem.com/products/a-1210477.html measures in adults to integrate findings. PM deficits were found to be commonly reported by patients with CHI and their significant others and they could be identified using behavioral measures in adults, children and adolescents with CHI. However, more work is needed to clarify the nature and mechanisms of these deficits. Although some promising results have been reported by studies that evaluated PM treatment, most studies lack tight experimental control and used only a small number of participants. The paper concluded with some suggestions for future research. (C) 2011 Elsevier Ltd. All rights reserved.”
“Purpose: To evaluate results of carotid endarterectomy (CEA) in diabetic patients in a large single-center experience.

Methods: Over a 13-year period ending in December 2008, 4305 consecutive CEAs in 3573 patients were performed. All patients were prospectively enrolled in a dedicated database. Interventions were performed in diabetic patients in 883 cases (20.5%; group 1) and in nondiabetics in the remaining 3422 (79.5%; group 2). Early results in terms of 30-day stroke and death rates were analyzed and compared.

Follow-up results were analyzed with Kaplan-Meier curves and compared with log-rank test.

Results: Diabetic patients were more likely to be females and to have coronary artery disease, peripheral arterial this website disease, hyperlipemia, and arterial hypertension Protein tyrosine phosphatase than nondiabetics. There were no differences between the two groups in terms of preoperative clinical status or degree of carotid stenosis. Interventions were performed under general anesthesia with somatosensory-evoked potentials (SEPs) monitoring in

67% of the patients in both groups, while the remaining interventions were performed under clinical monitoring. Shunt insertion (14% and 11%, respectively) and patch closure rates (79% and 76%, respectively) were similar between the two groups. There were no differences between the two groups in terms of neurological outcomes, while the mortality rate was higher in group 1 than in group 2 (P = .002; odds ratio [OR], 3.5; 95% confidence interval [CI], 1.5-8.3); combined 30-day stroke and death rate was significantly higher in group 1 (2%) than in group 2 (0.9%; P = .006; 95% CI, 1.2-3.9; OR, 2.2). At univariate analysis, perioperative risk of stroke and death in diabetic patients was significantly higher in patients undergoing intervention with SEP cerebral monitoring (95% CI, 0.9-39.9; OR, 5.9; P = .01), and this was also confirmed by multivariate analysis (95% CI, 1.1-23.1; OR, 8.

METHODS: The data from 196 patients were reviewed retrospectively

METHODS: The data from 196 patients were reviewed retrospectively. All patients had iatrogenic sciatic nerve injuries at the buttock and thigh levels and were evaluated and treated at the Louisiana State University Health Sciences Center between the years 1968 and 1999. One hundred sixty-four

of these patients had injuries caused by injections at the buttock level, 15 sustained sciatic nerve injuries after a total hip arthroplasty, and 17 had iatrogenic damage at the thigh level.

RESULTS: Patients with severe motor deficits underwent neurolysis if they had positive nerve Bleomycin purchase action potentials, and end-to-end anastomosis or grafting if the nerve action potentials were negative. Operations were performed on 64 patients with injection injuries at the buttock level, on 15 with iatrogenic damage at the thigh level, and on 15 with deficits after total hip arthroplasty. Results were analyzed by the procedure performed and by the outcome in both the peroneal and tibial divisions.

CONCLUSION: Protein Tyrosine Kinase inhibitor Patients with mild or no motor deficits and those with pain that was manageable did not undergo surgery and were treated conservatively. For patients with significant motor deficits and those with pain that was not responsive to pharmacological management, physical and occupational therapy required surgical intervention. Patients who had positive nerve action potentials required neurolysis only and

had the best recovery, whereas those with negative nerve action potentials required more extensive intervention entailing reanastomosis or grafting and had worse outcome. In general, the outcome was better for the tibial than for the peroneal divisions, regardless of the type of BCKDHA intervention.”
“Physical injury or compression of the root, dorsal root ganglion, or peripheral sensory axon leads to well-defined changes in biology and function. Behaviorally, humans report ongoing

painful dysesthesias and aberrations in function, such that an otherwise innocuous stimulus will yield a pain report. These behavioral reports are believed to reflect the underlying changes in nerve function after injury, wherein increased spontaneous activity arises from the neuroma and dorsal root ganglion and spinal changes increase the response of spinal projection neurons. These pain states are distinct from those associated with tissue injury and pose particular problems in management. To provide for developing an understanding of the underlying mechanisms of these pain states and to promote development of therapeutic agents, preclinical models involving section, compression, and constriction of the peripheral nerve or compression of the dorsal root ganglion have been developed. These models give rise to behaviors, which parallel those observed in the human after nerve injury. The present review considers these models and their application.

(C) 2012 Elsevier Ltd All rights reserved “
“Rationale Tram

(C) 2012 Elsevier Ltd. All rights reserved.”
“Rationale Tramadol is a centrally acting clinically

effective analgesic, with a weak opioid receptor affinity. It shows antidepressant-like effects in animal models such as forced swimming test, learned helplessness, and unpredictable chronic mild stress (UCMS) and enhances the concentrations of noradrenaline (NA) and serotonin (5-HT) by interfering with their reuptake and release mechanisms, like some antidepressants.

Objectives The aim of this study was to explore whether the antidepressant-like effects of tramadol is affected LXH254 in vitro by the serotonergic system. For this purpose, the effects of a lesion of the dorsal raphe nucleus (DRN) by 5,7-dihydroxytryptamine (5,7-DHT) on the action of tramadol (20 mg/kg, i.p.) on depression-related behavior and neurochemical correlates were investigated in mice. From the third week onward, we administered tramadol chronically during 4 weeks.

Results Tramadol reversed the physical and behavioral abnormalities induced by the UCMS. Furthermore, the lesion of the DRN by 5,7-DHT antagonized the antidepressant-like effects of tramadol

on the coat click here state, in the splash test but not in the resident-intruder test. The results obtained by high-pressure liquid chromatography showed that the level of 5-HT was reduced by the lesion in some brain regions without affecting the level of NA. Moreover, while the UCMS regimen diminished the level of 5-HT, tramadol increased the level of this neurotransmitter in certain regions.

Conclusions These results seem to indicate Astemizole that the serotonergic system is critically involved in the antidepressant-like effects of tramadol in the UCMS in mice.”
“D-Amino acid oxidase (DAAO) is a well-known flavoenzyme that catalyzes the oxygen-dependent oxidative de-amination of amino acid D-isomers with absolute stereospecificity, which results in a-keto acids, ammonia and hydrogen peroxide. Recently, the extraordinary functional plasticity of DAAO has become evident; in turn, boosting research on this flavoprotein. Protein engineering has allowed for a redesign of DAAO substrate specificity, oxygen

affinity, cofactor binding, stability, and oligomeric state. We review recent developments in utilizing DAAO, including as a biocatalyst for resolving racemic amino acid mixtures, as a tool for biosensing, and as a new mechanism of herbicide resistance. Perspectives for future biotechnological applications of this oxidative biocatalyst are also outlined.”
“Influenza viruses are known for their ability to change their antigenic structure and create new viral strains. Hemagglutinin (HA), for which 16 subtypes have been identified, is a major antigenic determinant essential for the pathogenesis of influenza A viruses. To predict and monitor future epidemics, it is critical to produce various HA subtype antigens conveniently and rapidly.