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. 1962 Nov;46(2):189-99.
doi: 10.1085/jgp.46.2.189.

Cat heart muscle in vitro. II. The steady state restpotential in quiescent papillary muscles

E PAGE

Cat heart muscle in vitro. II. The steady state restpotential in quiescent papillary muscles

E PAGE. J Gen Physiol. 1962 Nov.

Abstract

The steady state transmembrane resting potential difference (V(m)) has been measured in quiescent papillary muscles. V(m) was determined as a function of the external K concentration in Cl and SO(4) solutions and compared with the K equilibrium potential. Other measurements were made after replacement of external Na by choline, K by Rb and Cs, and Cl by SO(4), CH(3)SO(4), and NO(3). Effects on V(m) of albumin, temperature, and variation in internal K concentration are described.

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