we conclude that the widely divergent , ca2+-dependent systolic and diastolic properties of intact rat and rabbit cardiac muscle are retained with a high degree of fidelity in the majority of viable single myocytes isolated from the myocardium of these species , and that these myocytes are thus a valid model for studies of ca2+-dependent excitation-contraction mechanisms in the heart .
C0027061
myocardium
C0018787
heart