ABSTRACT This study aims to investigate the effects of ultraviolet Cexposure on the white pulp diameter of spleen and epidermal skin mitotic index of mice. An experimental study was performed in 5 groups, control and four treatment groups with exposure to ultravioletC in fourdifferent exposure time 15 (P1), 30 (P2), 60 (P3) and 120 minutes (P4)2 times a day for 15 consecutive days. Befor…