Article: PDF OnlyVitamin A and Protective ImmunityROSS, A. CATHARINE Ph.D. Author Information Dr. Ross is currently Professor of Biochemistry and Director of the Division of Nutrition at the Medical College of Pennsylvania in Philadelphia. She has conducted extensive research on vitamin A metabolism. Nutrition Today: July 1992 - Volume 27 - Issue 4 - p 18-26 Buy Abstract The author examines two intriguing research areas on vitamin A nutrition and immunity: the pathological consequences of vitamin A deficiency on the immune system and the circumstances in which supplementary vitamin A can stimulate either antibody production or cell-mediated reactions. © Williams & Wilkins 1992. All Rights Reserved.