any alterations externally induced in the polarity of the cortical filament system by chemical or physical stimulation and inhibition cause immobilization of the amebas ( fig . 18ii ) with characteristic changes in ( 1 ) cell shape ( spherulation and cell flattening ) , ( 2 ) membrane dynamics ( cytotic and cytokinetic activities ) , and ( 3 ) cytoplasmic organization ( hyalogranuloplasmic separation ) .
C0007634
cell
C0010834
cytoplasmic