Fig. 2From: Osteochondral regeneration of the femoral medial condyle by using a scaffold-free 3D construct of synovial membrane-derived mesenchymal stem cells in horsesProliferation of synovial membrane-derived mesenchymal stem cells (SM-MSCs) collected from three ponies. Growth curves (A and B) up to 1.0 × 107, Cell doubling numbers (C), and cell doubling times (D) from passages 0 to 2 (P0–P2) of SM-MSCs. Cell doubling number = ln(Nf/Ni)/ln(2). Cell doubling time = cell culture time / cell doubling number. Nf, final number of cells; Ni, initial number of cellsBack to article page