an in vitro assay , using cocultures of chinese hamster cells to measure metabolic cooperation between v79 6-thioguanine-sensitive ( 6tgs ) and resistant ( 6tgr ) cells , has been developed to detect noncytotoxic and nonmutagenic chemicals that inhibit , quantitatively , gap junctional communication .
C0007634
cells
C0206117
gap junctional