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The effect of LPS and citric acid treatment on hepatic caspase-3 (i) and inducible nitric oxide synthase (iNOS) (ii) immunostaining: (A) control liver; (B) LPS; (C) LPS+citric acid 1 g/kg; (D) LPS+citric acid 2 g/kg; (E) citric acid 4 g/kg (caspase-3 and iNOS immunohistochemistry, hematoxylin counterstain ×400). Color images available online at www.liebertpub.com/jmf
