dibutyryl cyclic amp ( 0.5 mm ) , parachlorophenylthio-cyclic amp ( 0.1 mm ) and dexamethasone ( 1 mum ) stimulated the activity of ornithine decarboxylase 7- to 8-fold by 5 hr of induction .
C0012054
dibutyryl cyclic amp
C0001455
cyclic amp