the following parameters were studied : 1 ) calcium-magnesium-activated and magnesium-activated atpase activity of washed and purified myofibrils , 2 ) calcium-activated atpase activity of purified myosin , 3 ) isomyosin composition and relative content of alpha-myosin heavy chains ( alpha-mhcs ) , and 4 ) force-velocity curve of left and right ventricle papillary muscles .
C0027096
myosin
C0027100
myosin heavy