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Immunolocalization of nitrotyrosine residues (A-C), MnSOD (E-G), CuZnSOD (I-K) and ECSOD (M-O) in placental sections from lean (LN; A, E, I, M), overweight (OV; B, F, J, N) and obese (OB; C, G, K, O) patients. Negative control sections where primary antibody was omitted (D, H, L, P). Original magnification 200×; scale bar = 50μm. Positive staining is indicated by the arrow heads (▶).
