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Histological sections of kidneys of Sprague-Dawley rats. (A–C): Masson’s trichrome stain of nephrons. Fibrotic areas are observed in blue (arrows). (D–F): same tissue observed by two-photon excitation microscopy. Fibrotic tissue is observed in green. Nef: nephrectomized rats not receiving the synbiotic, Lac: nephrectomized rats receiving the synbiotic, Control: sham-nephrectomized rats. Scale bar: 100 µm for (A–C) micrographs and 50 µm for (D–F) micrographs.
