TY - JOUR T1 - ACTION OF CALCIUM ON THE ISOLATED HUMAN FETAL HEART JF - Journal of Pharmacology and Experimental Therapeutics JO - J Pharmacol Exp Ther SP - 185 LP - 193 VL - 36 IS - 2 AU - W. D.M. LLOYD Y1 - 1929/06/01 UR - http://jpet.aspetjournals.org/content/36/2/185.abstract N2 - One may summarize the action of calcium on these two, isolated, human fetal hearts by saying that its administration was always followed by an increased strength of systole, a more regular rhythm, and a better coördination between auricle and ventricle. ER -