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Mice fed a purified diet low in copper display anemia, hypoceruloplasminemia, depressed concentrations of liver copper, and elevated concentrations of liver iron. An impaired humoral-mediated immune response (decreased numbers of antibody-producing cells) is observed in mice with severe as well as marginal copper deficiency. The magnitude of this impairment… (More)
We have shown that the selective removal of cells possessing Ia determinants coded by the I-A, I-B, and I-J regions of the H-2 gene complex completely abrogates the protective capacity of nylon-wool-purified T lymphocytes against leukemic challenge. This suggests that the Ia antigen bearing T cells play an important role in tumor immunity.