Inhibition of norepinephrine stimulated adenyl cyclase by theophylline.
D000067956:Adenylyl Cyclase Inhibitors; D000818:Animals; D004912:Erythrocytes / Q000201:enzymology*; D051381:Rats; D013806:Theophylline / Q000037:antagonists & inhibitors* / Q000494:pharmacology*
D000067956:Adenylyl Cyclase Inhibitors; D013806:Theophylline