evidence of placental synthesis has been obtained for hcg , hpl , and pro-opiomelanocortin ( the precursor molecule for adrenocorticotropic hormone ( acth ) , b-lipotropin ( b-lph ) , alpha-melanocyte-stimulating hormone ( alpha-msh ) , beta-endorphin , and other thus far uncharacterized peptides ) .
C0033195
pro-opiomelanocortin
C0023832
lipotropin