Presence of alpha-melanocyte-stimulating hormone in bovine pituitary intraglandular colloid of intermediate lobe origin

The American Journal of Anatomy
W H Boyd, R Krogsrud

Abstract

Alpha-melanocyte-stimulating hormone (alpha-MSH), one of several peptide hormones originating in the intermediate lobe of the pituitary as proopiomelanocortin, was discovered in bovine pituitary intraglandular colloid by using radioimmunoassay. The quantity of alpha-MSH varied from 5 to 368 micrograms/mg protein in the three pools. The importance of this finding is discussed in light of the possibility that the colloid is a transport medium for alpha-MSH and other intermediate lobe hormones.

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Related Concepts

Bos indicus
Melanocyte stimulating hormone
Pituitary Stalk
Radioimmunoassay

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