2 cyclic adenosine 3',5'-monophosphate ( cyclic amp ) and dibutyryl cyclic amp ( db cyclic amp , up to 1 mm ) depressed the amplitude of e.j.ps , probably by interacting with extracellular sites on the nerve terminals , similar to those responsive to adenosine .
C0012054
dibutyryl cyclic amp
C0001455
cyclic amp