effects of opioid peptides ( beta-endorphin , dynorphin ( 1-13 ) . alpha-neoendorphin , beta-neoendorphin , leucine-enkephalin , methionine-enkephalin ) on the release of thyrotropin-releasing hormone ( trh ) from the rat caecum were studied in vitro .
C0205753
opioid peptides
C0013355
dynorphin