نتایج جستجو برای: antigenic profiles
تعداد نتایج: 171991 فیلتر نتایج به سال:
Many vector-borne pathogens rely on antigenic variation to prolong infections and increase their likelihood of onward transmission. This immune evasion strategy often involves mutually exclusive switching between members of gene families that encode functionally similar but antigenically different variants during the course of a single infection. Studies of different pathogens have suggested th...
Community structure has been widely identified as a feature of many real-world networks. It has been shown that the antigenic diversity of a pathogen population can be significantly affected by the contact network of its hosts; however, the effects of community structure have not yet been explored. Here, we examine the congruence between patterns of antigenic diversity in pathogen populations i...
Previous immunohistological studies showed a relationship between expression of blood group-related antigens (BG-Ag) and invasive potential in human urinary bladder carcinoma, but the marked variability of antigen staining within many individual tumors has obscured the biological basis of this finding. We studied the expression of the A, H, and T (Thomsen-Friedenreich) BG-Ag by flow cytometry i...
A blocking-ELISA procedure was used to quantify antibodies in sera of humans immunized with poliovirus vaccines. Titers determined by this method demonstrated an excellent correlation with the results of neutralization test. Testing of serum potency with a panel of type 1 poliovirus strains altered antigenically was used to evaluate the composition of polyclonal sera with respect to the epitope...
background and objectives : 300 pseudomonas aeruginosa strains were isolated from hospitalized patients in iran. using international antigenic typing system (iats) antibodies, all strains were classified into 16 serotypes while serotype 14 was not identified among the 17 known serotypes. to evaluate the rate of cross-reactivity between o- antigenic determinants, monospecific polyclonal antibodi...
Tutorial dialogue has been the subject of increasing attention in recent years, and it has become evident that empirical studies of human-human tutorial dialogue can contribute important insights to the design of computational models of dialogue. Students with particular characteristics may have specific dialogue profiles, and knowledge of such profiles could inform the design of tutorial dialo...
Pregnant women are infected by specific variants of Plasmodium falciparum that adhere and accumulate in the placenta. Using serological and molecular approaches, we assessed the global antigenic diversity of surface antigens expressed by placenta-binding isolates to better understand immunity to malaria in pregnancy and evolution of polymorphisms and to inform vaccine development. We found that...
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