[Effect of vitamin A deficiency in mice on the formation of specific cytolytic T-lymphocytes].

Content of retinol, retinyl acetate and retinyl palmitate was studied by means of high pressure liquid chromatography, in liver tissue of mice, kept on a vitamin A-free diet during various periods of time. Cell proliferative activity and formation of specific T-killers were distinctly inhibited in mixed culture of lymphocytes from spleen tissue of A-avitaminous animals. Proliferative and cytolytic activity of the stimulated lymphocytes might be corrected by means of retinoic acid and retinyl acetate in vitro and in vivo.