Sex steroids induce apoptosis of CD8+CD4+ double-positive thymocytes via TNF-α

Abstract excerpt

T cell production by the thymus, thymic size, cellularity and output all decrease drastically after puberty. Among the candidates that may mediate this decrease are the sex steroids: hypersecretion or pharmacological administration of these hormones has long been known to induce thymic hypocellularity, and their depletion yields thymic hypercellularity. Here we show that a typical sex steroid, testosterone,...

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