Beta-lipotropin-like immunoreactivity in intraglandular colloid from pituitary intermediate lobe cells.

Abstract

The aim of this paper is the identification of beta-lipotropin (beta/LPH) as a peptide present in intraglandular colloid (the holocrine secretion of cells in the marginal half of the bovine pituitary intermediate lobe). beta/LPH, although not an opioid peptide itself, contains the peptide beta-endorphin. The methodology used allowed detection of beta/LPH when present in the samples in sufficient amounts.