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Coexpression of GLU and IN in pancreatic islets of Gcgr−/− mice. A, In Gcgr+/+ mice, cells expressing IN (red) did not immunostain for GLU (green). Bar, 60 μm. In contrast, IN+GLU+ cells, indicated by arrowheads, were found in islets of Gcgr−/− mice (B and C). Photomicrographs illustrate confocal microscope images. Bar, 40 μm.
