the changes in levels of adenosine 3',5'-cyclic monophosphate ( cyclic amp ) and guanosine 3',5'-cyclic monophosphate ( cyclic gmp ) were measured at different times during exposure of pancreatic fragments to amino acids ( l-alanine and l-arginine ) , islet hormones ( insulin and glucagon ) or acetylcholine ( ach ) .
C0002520
amino acids
C0001898
l-alanine