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Fluorescence staining of MC1Rs on B16/F10 tumor section using MC1R antibody (white). The nuclei were stained with DAPI (grey). The microscopic images were acquired by confocal laser microscopy at 100 × magnification. Scale bar, 20 μm. DAPI, 4′,6-diamidino-2-phenylindole; MC1R, melanocortin-1 receptor.
