tetracaine ( apparent pa2 5.3 +/- 0.2 ) , quinidine ( 5.2 +/- 0.1 ) quinine ( 5.1 +/- 0.1 ) , d-propranolol ( 4.7 +/- 0.1 ) , 1-propranolol ( 4.7 +/- 0.1 ) , lignocaine ( 4.0 +/- 0.1 ) and procaine ( 3.6 +/- 0.1 ) displaced cumulative concentration-response curves to ca2+ to the right without depression the maximal response .
C0034414
quinidine
C0034417
quinine