gel filtration analysis of the beta-endorphin immunoreactivity in tissue extracts and plasma showed that anterior pituitary and plasma contain three immunoreactive components , eluting like beta-endorphin , beta-lipotropin and proopiocortin , whereas only beta-endorphin-like material was detected in posterior pituitary , hypothalamus and pineal .
C0023832
beta-lipotropin
C0033195
proopiocortin