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Levels of TGF-β are reduced in CR mice. (A) Reduced serum TGF-β in CR (white bars) with respect to the ND (black bars) mice. (B) Intratumor levels of TGF-β are also reduced in CR mice. (C) TGF-β staining is reduced in tumors from CR mice. *P < 0.05 and versus ND; n = 7 per group.
