for fluorescent staining of microfilaments in cells , heavy meromyosin ( hmm ) or subfragment-1 ( s-1 ) was labeled with a novel thiol-directed fluorescent dye , n- ( 7-dimethylamino-4-methylcoumarinyl ) maleimide ( dacm ) , instead of the usual dyes , such as fluorescein-isothiocyanate ( fitc ) .
C0025979
microfilaments
C0007634
cells