Vitamin E has been reported to protect cells involved in immune response, such as lymphocytes, macrophages and plasma cells, against oxidative damage and to enhance the function of these cells (Konjufca et al., 2004; Meydani and Beharka, 1998) and high levels of VE increases antibody production (Gore and Qureshi, 1997; Haq et al., 1996; Hossain et al., 1998)