we investigated the effects of the retinoids , all-trans retinoic acid ( t-ra ) , 13-cis retinoic acid , etretinate , and arotinoid ethyl ester , on 12-o-tetradecanoyl-phorbol-13-acetate ( tpa ) -induced dna synthesis , and epidermal hyperplasia in hairless mouse skin .
C0035339
retinoids
C0040845
all-trans retinoic acid