to establish which component of the beta-adrenoceptor.adenylate cyclase ( ac ) system is impaired in the shr arteries , effects of two activators of ac -- cholera toxin ( ctx ) and forskolin -- and of dibutyryl cyclic amp ( db cyclic amp ) were compared between strips of femoral arteries isolated from 13 week-old shr and age-matched wky .
C0012054
dibutyryl cyclic amp
C0001455
cyclic amp