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TNF-α immunostained sections of: (A) Normal spleen showing negative TNF-α staining, score 0 (×100). (B) Spleen of group I showing strong TNF-α staining, score 3 (×100). (C) Spleen of group II showing weak TNF-α staining, score 1 (×100). (D) Spleen of group III showing negative TNF-α staining, score 0 (×100).
