[The action of caffeine, theobromine and theophylline on the isolated phrenicus-diaphragm preparation of the rat in different extracellular concentrations of potassium and calcium ions].
D000009:Abdominal Muscles; D000818:Animals; D002110:Caffeine / Q000494:pharmacology*; D002118:Calcium / Q000494:pharmacology*; D002136:Calcium, Dietary; D003964:Diaphragm; D007477:Ions; D009132:Muscles / Q000494:pharmacology*; D011188:Potassium / Q000494:pharmacology*; D051381:Rats; D013805:Theobromine / Q000494:pharmacology*; D013806:Theophylline / Q000494:pharmacology*
D002136:Calcium, Dietary; D007477:Ions; D002110:Caffeine; D013806:Theophylline; D013805:Theobromine; D011188:Potassium; D002118:Calcium
CAFFEINE/pharmacology; CALCIUM/pharmacology; MUSCLES/pharmacology; POTASSIUM/pharmacology; THEOBROMINE/pharmacology; THEOPHYLLINE/pharmacology