PMID: 1092798Jun 1, 1975Paper

Functional subclasses of T-lymphocytes bearing different Ly antigens. I. The generation of functionally distinct T-cell subclasses is a differentiative process independent of antigen

The Journal of Experimental Medicine
H Cantor, E A Boyse


Ly alloantigens coded by two unlinked genetic loci (Ly-1 and Ly-2/Ly-3) are expressed on lymphoid cells undergoing thymus-dependent differentiation. Peripheral Thy-1+ cells from C57BL/6 mice can be divided into three subclasses on the basis of differential expression of Ly-1, Ly-2, and Ly-3; about 50% express all three Ly antigens (Ly -123+), about 33% only Ly-1 (Ly-1+), and about 6-8% Ly-2 and Ly-3 (Ly-23+). Cells of the Ly-123+ subclasses are the first peripheral Thy-1+ cells to appear in ontogeny, and are reduced in the periphery shortly after adult thymectomy. In contrast, Ly-1+ and Ly-23+ subclasses appear later in the peripheral tissues than do Ly-123+ cells, and are resistant to the early effects of adult thymectomymperiheral lymphoid populations depleted of Ly-1+ cells and Ly-123+ cells (and thereby enriched for Ly-23+ cells) were incapable of developing significant helper activity to SRBC but generated substantial levels of cytotoxic activity to allogeneic target cells. The same lymphoid populations, depleted of Ly-23+ cells and Ly-123+ cells (and thereby enriched for Ly-1+ cells), produced substantial helper responses but were unable to generate appreciable levels of killer activity. These experiments imply that commi...Continue Reading


Jun 11, 1968·Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character·E A BoyseL J Old

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