Effects of estrogen and dopamine agonists on the expression of argyrophilic nucleolar organizer regions in prolactin cells of rats.

Abstract

The number of nucleolar organizer regions reflects nuclear and cellular activity, such as the proliferation and differentiation of cells. Prolonged administration of estrogen (E2) induces the hyperplasia of prolactin (PRL) cells and the development of PRL-secreting pituitary tumors in rats. Dopamine agonists are known to reduce the effects of E2 treatment… (More)

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