| protirelin | <chemical> A tripeptide hormone that originates in the hypothalamus and stimulates the secretion of thyrotropin from the pituitary gland. In humans, it also acts as a prolactin-releasing factor. It is also a neurotransmitter in the central nervous system. Chemical name: L-Prolinamide, 5-oxo-L-prolyl-L-histidyl- (12 Dec 1998) |
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