treatments that resulted in an increased level of intracellular cyclic amp , such as treatment with 1-methyl-3-isobutylxanthine , theophylline , dibutyryl cyclic amp , or 8-bromocyclic amp also resulted in an increased rate of 45ca2+ entry via nitrendipine-sensitive ca2+ channel .
C0001455
cyclic amp
C0012054
dibutyryl cyclic amp