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Immunohistochemical staining with anti-human CD45 antibody. Left: negative control. Representative section of formalin-fixed paraffin-embedded decalcified bone from a wild type untreated C57BL/6J mouse stained with anti-human CD45 antibody; as expected, no positive cells are found. Right: positive control. Representative section of a formalin-fixed paraffin-embedded decalcified human osteomedullary biopsy. Scale bars: 200 μm.
