adrenal enkephalins ( 0.3-4.0 microm ) of methionine enkephalin , leucine enkephalin , met-enkephalin-arg6-phe7 , and met-enkephalin-arg6-gly7-leu8 , beta-endorphin ( 0.2-2.0 microm ) , or dynorphin a ( 1-13 ) ( 0.2-2.0 microm ) did not change atrial tension for a 15-min postadministration test period .
C0014298
enkephalins
C0014295
met-enkephalin