نتایج جستجو برای: lymphocytes population
تعداد نتایج: 761304 فیلتر نتایج به سال:
The Cooperative Family Registry for Breast Cancer Studies (CFRBCS) is an international multisite cooperative consortium of investigators who collaborate to ascertain families at risk for breast cancer. Sufficient blood was collected from each individual participating in the CFRBCS to permit the isolation of lymphocytes, distribution into four aliquots, and cryopreservation for future transforma...
T lymphocytes that are involved in cellular mediated immunity include two types known as TCD8+ (Cytotoxic T lymphocytes) and TCD4+ (helper T lymphocytes). TCD4+ has four main subtypes, including TH1, TH2, TH17, and Treg Lymphocytes.TH17 lymphocytes play a role in defense against microbes that TH1 and TH2 lymphocytes have not the ability to respond to them. The most important cytokines, which ar...
BACKGROUNDS: Seminoma is frequently observed in human and canine testes especially in cryptorchids. Canine and human seminomas are typically associated with leukocytic infiltration. OBJECTIVES: We aimed to identify the type of lymphocytes that infiltrate to seminomas. METHODS: Tumor infiltrating lymphocytes were evaluated by immunohistological techniques in 5 dogs with diffuse seminoma. Routine...
The Cooperative Family Registry for Breast Cancer Studies (CFRBCS) is an international multisite cooperative consortium of investigators who collaborate to ascertain families at risk for breast cancer. Sufficient blood was collected from each individual participating in the CFRBCS to permit the isolation of lymphocytes, distribution into four aliquots, and cryopreservation for future transforma...
Arsenic has been associated with multiple harmful effects at the cellular level. Indirectly these defects could be related to impairment of the integrity of the immune system, in particular in lymphoid population. To characterize the effect of Arsenic on redox status on this population, copper smelter workers and arsenic unexposed donors were recruited for this study. We analyzed urine samples ...
Alloantisera prepared in strain 13 guinea pigs by immunization with strain 2 lymphoid cells markedly inhibit the activation of (2 X 13)F1 peritoneal exudate lymphocytes by the 2,4-dinitrophenyl (DNP) derivative of a copolymer of L-glutamic acid and L-lysine (GL) 1 (1). Responses to DNP-GL and to the closely related antigen, DNP-poly-L-lysine (DNP-PLL), depend upon the presence of an immune resp...
Thymus-dependent (T) lymphocytes from (2 x 13)F1 hybrid guinea pigs immunized to ovalbumin (OVA) in complete Freund's adjuvant can be stimulated to proliferate in vitro by antigen-pulsed peritoneal exudate cells (PECs) derived from either strain 2 or strain 13 donors. In this communication, we show that the population of primed F1 T lymphocytes which can be activated by antigen-pulsed strain 2 ...
The CD3(-)NKp46(+) phenotype is frequently used for the identification of natural killer (NK) cells in various mammalian species. Recently, NKp46 expression was analyzed in more detail in swine. It could be shown that besides CD3(-)NKp46(+) lymphocytes, a small but distinct population of CD3(+)NKp46(+) cells exists. In this study, we report low frequencies of CD3(+)NKp46(+) lymphocytes in blood...
The regulation of B-cell and T-cell immune responses has been extensively examined and in the experimental animal appears to involve regulatory or "suppressor" T cells (1-4). The limitations of in vitro experimentation have made comparable study of nonpathological human suppression quite difficult (5). We report here an in vitro method that generates and quantitates suppressor activity in man a...
background: an increase in the number of intraepithelial lymphocytes (iel) in the duodenal mucosa is an important criterion for the histological diagnosis of celiac disease (cd). we determined the normal range for intraepithelial lymphocytes (iel) in the second part of duodenum in healthy iranian population. materials and methods: four biopsy samples of the endoscopically normal appearing mucos...
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