Abstract
T cells may either increase or decrease in vitro proliferation of marrow pre-B cells from patients with acute lymphatic leukaemia after withdrawal of successful treatment. There is less proliferation when T cells are removed by E rosetting, and repletion of T cells restores proliferation. When additional T cells from the patients were added to the patients' marrows, proliferation was increased more effectively than with T cells from healthy subjects; there was no evidence of an allogeneic effect. In contrast, normal T cells stimulated with concanavalin A suppress proliferation. There was no evidence of differentiation into B cells.
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Selected References
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