a variety of agents ( viz : cytochalasin d , colcemid , cytochalasin d+ colcemid , ca2+-free medium , 7-ketocholesterol , cholesterol , concanavalin a , anti-embryonal carcinoma antiserum and tunicamycin ) which modify the cell membrane and/or cytoskeleton were used to investigate the molecular and cellular basis of the intercellular and intracellular components of compaction and analyse the relationships between them .
C0007603
cell membrane
C0007634
cellular