the peptide families identified in skin extracts of the african frogs were as follows : caeruleins ( caerulein , [ asn2 , leu5 ] caerulein ) , tachykinins ( kassinin , [ glu2 , pro5 ] kassinin , hylambatin ) , bradykinins [ ( hyp3 ] bradykinin ) , xenopsin , thyrotropin releasing hormone , peptide pyla and the magainins i and ii .
C0039241
tachykinins
C0022528
kassinin