the addition of 1.0 mm magnesium chloride , 1.0 mm atp , in the presence of a low calcium ion concentration ( relaxation solution ) induced the formation of some fibrous bundles of actin without contracting , whereas the addition of a micromolar concentration of calcium in addition to 1.0 mm magnesium-atp ( contraction solution ) ( taylor , d .
C0024472
magnesium chloride
C0024467
magnesium