Evaluation of Vitamin A Analogs in Modulating Epithelial Differentiation of 13-Day Chick Embryo Metatarsal Skin Explants 1

tamin A (21, 22). Large doses of vitamin A administered to hamsters reduce the number of tumors produced by 7,12dimethylbenzanthracene and benzo(a)pyrene in various ep ithelial tissues including trachea and bronchi (3, 23). Pa tients with established skin keratoses (which are considered premalignant) and those with overt basal cell carcinomas can be… CONTINUE READING