Effects of tetramethylpyrazine on isolated atria of the guinea-pig.
D000818:Animals; D005260:Female; D006168:Guinea Pigs; D006339:Heart Rate / Q000187:drug effects*; D066298:In Vitro Techniques; D008297:Male; D009200:Myocardial Contraction / Q000187:drug effects*; D011719:Pyrazines / Q000494:pharmacology*
D011719:Pyrazines; C017953:tetramethylpyrazine