Fig. 3From: The osteogenic inducing potential of platelet-rich fibrin on stem cells derived from bone marrow and oral mucosaPhotomicrographs of isolated GMSCs (scale bar 50 μ) a Single cells were apparent by day 3 and appeared as spindle fibroblast like in appearance, b cells started to increase in number and form colonies of at least 10–20 cells, c cells appeared to increase in number and several colonies (black arrow) started to fuse together, d cells at 70% confluence. (Scale bar50µm)Back to article page