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Effects of anti-TNFα antibody on NM-induced CD11b+ macrophage accumulation in the lung. Sections, prepared 3, 7, and 28 days after exposure of rats to NM or PBS control (CTL), followed by anti-TNFα antibody or PBS, were stained with antibody to CD11b. Binding was visualized using a Vectastain kit. Original magnification, ×600. Representative sections from 1 of 3 rats/treatment group are shown. CTL, 3 days post PBS exposure.
