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Morphology and flow cytometry results of Lewis-derived bone marrow mesenchymal stem cells. A: First-passage bone marrow mesenchymal stem cells (BM MSCs); B: Second-passage BM MSCs; C: Third-passage BM MSCs (× 200 magnification); D: The proportion of CD90+ and CD450- cells was approximately 95.48%; E: The proportion of CD29+ and CD34- cells was approximately 99.82%; F: The proportion of RT1A+ and RT1B- cells was approximately 99.87%.
