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  Indian J Med Microbiol
 

Figure 1: Phase-contrast microscopy of the rat bone marrow mesenchymal stem cells primary culture: (a) 3 days: Most cells are adherent, spindle (stars) or triangular (thick arrows) with processes (thin arrows), some rounded refractile cells (curved arrow). (b) 7th day: Cells are larger with vesicular nuclei (arrow heads), star in shape (double arrows). (c) 9th day: Spindle cells (star) with well-developed interdigitating cytoplasmic processes (thin arrows), granular cytoplasm and eccentric vesicular nuclei (arrow head). (d) CD105 immunostaining: Most mesenchymal stem cells are positive for CD105 (thin arrows)

Figure 1: Phase-contrast microscopy of the rat bone marrow mesenchymal stem cells primary culture: (a) 3 days: Most cells are adherent, spindle (stars) or triangular (thick arrows) with processes (thin arrows), some rounded refractile cells (curved arrow). (b) 7<sup>th</sup> day: Cells are larger with vesicular nuclei (arrow heads), star in shape (double arrows). (c) 9<sup>th</sup> day: Spindle cells (star) with well-developed interdigitating cytoplasmic processes (thin arrows), granular cytoplasm and eccentric vesicular nuclei (arrow head). (d) CD105 immunostaining: Most mesenchymal stem cells are positive for CD105 (thin arrows)