نتایج جستجو برای: filamentous hemagglutinin
تعداد نتایج: 27081 فیلتر نتایج به سال:
The interaction between human neutrophils and wild-type Bordetella pertussis or mutants expressing altered lipopolysaccharide or lacking virulence factors-pertussis toxin, adenylate cyclase toxin, dermonecrotic toxin, filamentous hemagglutinin (FHA), pertactin, or BrkA-was examined. In the absence of antibodies, the wild-type strain and the mutants, with the exception of mutants lacking FHA, at...
BACKGROUND Intranasal delivery of vaccines directed against respiratory pathogens is an attractive alternative to parenteral administration. However, using this delivery route for inactivated vaccines usually requires the use of potent mucosal adjuvants, and no such adjuvant has yet been approved for human use. METHODOLOGY/PRINCIPAL FINDINGS We have developed a live attenuated Bordetella pert...
background and aims: pertussis is a highly contagious, vaccine-preventable disease. determination of the seroepidemiology of pertussis makes possible the evaluation of pertussis immunity in a population. in this study, we determined the seroprevalence of bordetella pertussis igg antibodies in different age groups in tehran, iran. materials and methods: overall, 1101 subjects between ages of 8 ...
objective: influenza virus a (h1n1) is an important subtype of the influenza respiratory viruses, which has important worldwide implications. hemagglutinin (ha), an important viral antigen, is responsible for binding to human cell receptors leading to an onset of the disease process. considering the critical role of viral attachment, this study focuses on the extraction and cloning of ha and it...
BACKGROUND The use of whole-cell pertussis vaccine has led to a significant decline in incidence of the disease among children. This change in the epidemiological profile led to an increased number of cases among teenagers and adults, as a result of loss of immunity to the disease or vaccine after approximately 10 years. An increased number of cases was also observed among non-immunized or part...
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