acetylcholine 1 x 10 ( -7 ) m , 5 x 10 ( -7 ) m , and 1 x 10 ( -6 ) m , reduced the epinephrine-induced fall in the ventricular fibrillation threshold by 42 % , 100 % , and 94 % , respectively .
C0014563
epinephrine
C0042510
ventricular fibrillation