cytoskeletons prepared from macrophages treated with phorbol 12-myristate 13-acetate for 20-30 s before permeabilization , markedly stimulated ( 300 % of control ) the rate of actin assembly , and this increment was completely cytochalasin-sensitive , indicating that exposure to phorbol leads to formation of free barbed ends .
C0010853
cytoskeletons
C0001271
actin