TY - GEN AU - Friedman,W F AU - Kirkpatrick,S E TI - In situ physiological study of the developing heart SN - 0363-5872 PY - 1976///0202 KW - Age Factors KW - Animals KW - Animals, Newborn KW - physiology KW - Blood Pressure KW - Female KW - Gestational Age KW - Heart KW - embryology KW - Myocardial Contraction KW - Pregnancy KW - Sheep N1 - Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S ER -