we estimated the cellular myosin , actin , and tropomyosin contents of vascular smooth muscle from ( 1 ) seven major arteries , ( 2 ) seven large veins , and ( 3 ) the first through third order branches of the uterine vasculature to determine whether variations in the contractile apparatus contribute to the functional diversity of vascular smooth muscle .
C0001271
actin
C0026820
contractile