Serologically Defined Subpopulations of Human T Lymphocytes

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Abstract
Several rabbit antisera to T cells obtained from various sources (thymus, peripheral blood, brain, T-derived leukemias) were studied with the aim to obtain reagents specific for a subset of T cells. Sera were first absorbed on human tissues and B cells; thereafter these T cell-specific sera were additionally absorbed with T cells of different origin and especially with leukemic T cells, which are likely to represent a clonal expansion of a subset of T cells with potentially unique antigenic markers. Three antigenically distinct subpopulations of T cells were delineated. The relationship of these subsets with previously defined human T cell subpopulations (T subsets with a receptor for the Fc or IgG or IgM or with a receptor for a lectin from wheat germ agglutinin) was investigated.