l-epinephrine ( 4x10 ( -10 ) mole ) , 1-norepinephrine ( 1x10 ( -9 ) mole ) and 1-isoproterenol ( 1.6x10 ( -10 ) mole ) in 5 microliter of isotonic saline transiently accerlerated the mean heart rate by almost 9 percent .
C0014563
epinephrine
C0028351
norepinephrine