background: various responses and different prognosis to specific treatment in different patients from one hand, and importance of ifn-γ producer cells on the other hand impressed us to study tc1. methods: the study was conducted in ghaem medical center and bu-ali research institute, mashhad university of medical sciences, iran from 2001 to 2002. lymphocytes of 36 patients were counted and cult...

Abstract Background Ulcerative Colitis (UC) combine both inflammation and coagulation in their pathogenesis clinical manifestations. Although platelets (PLT) are well known for role hemostasis, there a rising number of studies supporting considerable as inflammatory amplifiers chronic conditions. However, whether PLT related to the efficacy biologic agents is unknown. This study aimed investiga...

Because T cell responses are critical for defense against viral infections, a series of synthetic peptides derived from the predicted sequence for HIV-1 proteins gp41, pg120, gag, and viral polymerase were used to test the T cell proliferative response of HIV-1 seropositive individuals. Of HIV-1-infected donors from various clinical categories 90% (27/30) had sensitized cells that proliferated ...

Surface immunofluorescence experiments using a human anti-i and two anti-I antisera have been performed on human peripheral blood lymphocytes. These are known to contain cold-reactive monoclonal IgM antibodies against the carbohydrate sequence: (formula: see text). A high proportion of B- and T-type lymphocytes express these I and i determinants. In the presence of anti-human immunoglobulin, th...

objective: common variable immunodeficiency (cvid) is one of the most frequent cases of primary immunodeficiency. it is likely that this heterogeneous disease is caused by several distinct genetic disorders. the activation-induced cytidine deaminase (aid) enzyme is involved in class switching, somatic hypermutation (shm) and processes associated with gene conversion in the germinal center. in o...