to analyze the assembly mechanism of the contractile ring , we microinjected a small amount of rhodamine-labeled phalloidin ( rh-pha ) or rhodamine-labeled actin ( rh-actin ) into dividing normal rat kidney cells . rh-pha was microinjected during prometaphase or metaphase to label actin filaments that were present at that stage .
C0001271
actin
C0025979
actin filaments