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Dynamics of CD3+CD4+ T-helpers (A), CD3+CD8+ T-cytotoxic lymphocytes (B), and T-helper/T-cytotoxic lymphocyte ratio (C) in the thymus of the control rats (150 ppm) and the rats that consumed deuterium-depleted water (10 ppm). Data are shown as mean ± S.E.M. p < 0.05 compared to the control (*).
