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Characteristics of BMSCs and chondrocytes. BMSCs began to adhere within 24 h after inoculation. (A) BMSCs were spindle-shaped or scalene triangle-shaped (phase contrast, ×100). Newly isolated chondrocytes were rounded, with strong reflection. Cells were adherent to the dish within 3 days. (B) Adhered cells were shaped like transparent polygons with great refractivity (phase contrast, ×100).
