Analyses of cell surface determinants of splenocytes from copper-deficient C58 mice indicate alterations in lymphocyte subpopulation characteristics. Both the absolute number and the relative percentage of surface immunoglobulin-bearing (B) cells from copper-deficient mice were significantly greater than those from copper-supplemented controls. The relative percentage of Thy 1.2-positive (T) cells was decreased, and the decrease was most prominent within the Lyt 1-positive (helper) T-cell subset. The functional responsiveness of both B cells and T cells was decreased in copper deficiency.
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