Chiba, S Prevention of the negative chronotropic effect of adenosine by caffeine. [electronic resource] - The Tohoku journal of experimental medicine Nov 1969 - 307-8 p. digital Publication Type: Journal Article ISSN: 0040-8727 Standard No.: 10.1620/tjem.99.307 doi Subjects--Topical Terms: Acetylcholine--pharmacologyAdenine Nucleotides--pharmacologyAdenosine Triphosphatases--pharmacologyAnimalsCaffeine--pharmacologyDogsMethodsNucleosides--antagonists & inhibitorsSinoatrial Node--drug effectsTheophylline--pharmacologyVagotomy