this component is substantially larger when equimolar ba2+ replaces ca2+ as the charge carrier , and is sensitive to the dihydropyridine agonist bay k8644 ( 5 microm ) and antagonists nifedipine ( 1-10 microm ) and nimodipine ( 1-10 microm ) .
C0012315
dihydropyridine
C0028066
nifedipine