Localization of prolactin-like immunoreactivity in grafted human sweat glands.

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Abstract
Using a double-antibody immunoperoxidase technique, we demonstrated human prolactin-like material in some cells of the secretory coil and in luminal duct cells of sweat glands of human skin which had been carried as grafts on mice for 32-35 weeks. It therefore seems likely that a population of cells in the secretory coil synthesizes prolactin and can be considered as diffuse peripheral endocrine cells. The prolactin may function locally to regulate sweat electrolyte concentration.