Response to increases in extracellular calcium in the presence or absence of verapamil in normotensive or hypertensive cardiac muscle.
D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D006973:Hypertension / Q000503:physiopathology*; D066298:In Vitro Techniques; D008297:Male; D009200:Myocardial Contraction / Q000187:drug effects*; D010210:Papillary Muscles / Q000378:metabolism; D051381:Rats; D011918:Rats, Inbred SHR; D011921:Rats, Inbred WKY; D014700:Verapamil / Q000494:pharmacology*
D014700:Verapamil; D002118:Calcium