300-400 % of control , by two analogues of cyclic amp ( 8-br cyclic amp and dibutyryl cyclic amp ) , by an adenylate cyclase activator ( forskolin ) and by three structurally different inhibitors of phosphodiesterase ( 3-isobutyl-1-methylxanthine , sq 20,006 and ro 20-1724 ) , but not altered by two analogues of cyclic gmp ( 8-br cyclic gmp and dibutyryl cyclic gmp ) .
C0018338
cyclic gmp
C0012055
dibutyryl cyclic gmp