the time dependence of ca supply in rat ( r ) and rabbit myocardium ( k ) for the activation was analyzed by the action potential area up to 50 % of repolarization ( apa50 ) of the action potential ( ap ) during the electrical restitution as well as by extra contractions ( ec ) during the mechanical restitution and subsequent postextrastimulatory contraction ( pec ) or potentiation ( pep ) in isometrically contracting papillary muscle at different extracellular ca concentrations ( cae ) .
C0027061
myocardium
C0030352
papillary muscle