this inhibition was counteracted by 3 x 10 ( -5 ) m dibutyryl-cyclic gmp and 8-bromo-cyclic gmp and by the cyclic gmp-agonists , sodium nitroprusside ( nanpr ) , ascorbic acid ( as a ) , sodium azide ( nan3 ) and carbacholine .
C0012055
dibutyryl-cyclic gmp
C0018338
cyclic gmp