A sensitive procedure employing limiting dilution of activated lymphocytes and 51Cr release from highly labeled target cells was used to derive minimal estimates of the absolute frequency of cytotoxic T lymphocytes (CTL) present in a population of mouse lymphocytes activated to alloantigens of the major histocompatibility complex in bulk mixed lymphocyte cultures. From this figure (0.7-1.2%), t...

The patients evaluated in this study were classified into three groups of severe, moderate, and mild according to the severity of exposure to sulfur mustard. We evaluated the Immunological and Cytogenetical status of the patients after eight years of their exposure to sulfur mustard. The investigations revealed that the number of neutrophils, lymphocytes and monocytes in the patients with sever...

The presence of Ia-like antigens was demonstrated on a small population (2-6%) of highly purified human circulating T lymphocytes by immunofluorescence with a rabbit anti-Ia serum raised against the isolated bimolecular Ia structure. The Ia+ T lymphocytes have no surface or intracellular immunoglobulins. The expansion of this Ia+ T-cell population was encountered in certain patients. Ia antigen...

BACKGROUND Sister chromatid exchange (SCE) in human peripheral blood lymphocytes is one of the most extensively studied biomarkers employed to evaluate genetic damage subsequent to pesticide exposure. OBJECTIVE To estimate the pooled levels of SCE in human peripheral blood lymphocytes among population exposed to pesticide. MATERIALS AND METHODS Meta-analysis on the association between SCE f...

Strains of human immunodeficiency virus (HIV) transmitted between individuals use the CCR5 coreceptor, but no preferential depletion of particular Th-lymphocyte subpopulations has been reported during primary HIV infection (PHI). In contrast, gut-associated Th lymphocytes are preferentially depleted in macaques recently infected by simian immunodeficiency virus. The expression of CCR5 and the i...

Rationale: Aggravated atherosclerosis in B lymphocyte-deficient chimeric mice and reduced atherosclerosis after transfer of unfractionated spleen B lymphocytes into splenectomized mice have led to the widely held notion that B lymphocytes are atheroprotective. However, B lymphocytes can be pathogenic, because their depletion by anti-CD20 antibody ameliorated atherosclerosis, and transfer of B2 ...

Suspensions of cells from Hodgkin disease tumors were separated by velocity sedimentation in an isokinetic Ficall gradient. The separated cells were cultured with mitogens. The modal population of lymphocytes from the tumor contained 50%-75% of all lymphocytes separated from the tumor of each studied patient. Despite the fact that these cells appeared to be mature lymphocytes, the majority of ...

Introduction. ...................................... Lymphopoiesis. ................. : ................... Lymphocyte compartments. ........................ Origin of thymus lymphocytes. ..................... Proliferation of thymus lymphocytes. ................ Fate of thymus lymphocytes. ....................... Regulation of thymus lymphopoiesis ................. Evidence linking some lympho...

concerns have been raised about the adverse impact of dusty air pollution (dap) on human health. the aim of this study was to find the association between dusty air pollution based on air quality index (aqi) and the risk of allergic diseases in southwestern provinces of iran, with assessing cytokine profiles and lymphocyte immunophenotypes.in this case control study 148 individuals participated...