Fig. 2From: Co-culture of the bone and bone marrow: a novel way to obtain mesenchymal stem cells with enhanced osteogenic ability for fracture healing in SD ratsThe morphological features of MSCs from different sources were observed by an inverted microscope. The early-stage B-BM-MSCs (e, f) were spindle-shaped, triangle-shaped, and polygon-shaped, while the early-stage BM-MSCs (a, b) were polygon-shaped and round. However, the 2 types of P3 MSCs expressing GFP shared the same morphology (d, h). n = 12. Yellow arrows indicate the bone. Scale bar: 200 μm. P, passageBack to article page