the effect of catecholamines ( epinephrine , norepinephrine , isoproterenol , and phenylephrine ) on cyclic adenosine 3':5'-monophosphate ( camp ) level in isolated catfish ( ictalurus melas ) liver cells was studied in the presence or absence of alpha ( phentolamine ) and beta ( propranolol ) -receptor antagonists .
C0014563
epinephrine
C0028351
norepinephrine