we have studied the influence of the phorbol ester 12-o-tetradecanoylphorbol-13-acetate ( tpa ) , the vitamin a derivative retinoic acid and the benzodiazepine diazepam on intercellular communication via established gap junctions in a monolayer of rat liver epithelial cells ( rlb ) at various times of incubation .
C0042839
vitamin a
C0040845
retinoic