the effects of strychnine ( str ) were investigated on k ( + ) -stimulated 45ca2 ( + ) -uptake into mouse brain neurons , the contractile activity of spontaneously beating rat atria and on [ 3h ] nitrendipine and [ 3h ] bay k 8644 binding to dihydropyridine calcium channel antagonist and agonist binding sites on brain and cardiac membranes .
C0018792
atria
C0018787
cardiac