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Main lymphocyte subsets (A) and CD8+ cells and their both forms (CD8αα+ and CD8αβ+) cell percentages (B) in the spleen from the four groups: Term (T), Preterm (P), P+Leptin, and P+epidermal growth factor (P+EGF) at day 17. The results are expressed as mean ± SD (n = 8–12 pups/group). Statistical differences: * p < 0.05 versus T group; φ p < 0.05 versus P group; Δ p < 0.05 versus P+Leptin group.
