Chronic marginal vitamin A status affects the distribution and function of T cells and natural T cells in aging Lewis rats.

Abstract excerpt

Although both vitamin A (VA) deficiency and aging are independently associated with alterations in immune function, the effects of marginal VA status or VA supplementation on the immune system during aging were not studied. A long-term dietary study was conducted in a rat model of aging to quantify changes in T-cell populations in blood and spleen, including T-cells bearing a marker of natural killer (NKT) cells....

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