نتایج جستجو برای: natural infection
تعداد نتایج: 920855 فیلتر نتایج به سال:
one hundred sixty two domestic fowls were examined for toxoplasma infection by both indirect haemagglutination tests for toxoplasma antibodies and inoculation of their brains intraperitoneally into mice for the parasite. the overall sero-positive rate (spr) was 29 percent with the titers ranging from 1:20 to 1:6400. the number of each species tested and their spr were: 74 hens (27.0%), 35 roost...
learning english is very popular all over the world nowadays and it is considered a high prestigious language among citizens of different societies. one of the most important materials for learning a new language are textbooks. the debate that whether learning a new language is natural and neutral or ideological and influential on people’s worldviews, has always been of great importance.
UNLABELLED Natural-host sooty mangabeys (SM) infected with simian immunodeficiency virus (SIV) exhibit high viral loads but do not develop disease, whereas infection of rhesus macaques (RM) causes CD4(+) T cell loss and AIDS. Several mechanisms have been proposed to explain these divergent outcomes, including differences in cell targeting, which have been linked to low expression of the canonic...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید