Fig. 1

Phase-contrast photo micrographs of cultures showing MSC lines at various passage numbers. a During the onset of growth (P0-7th day), MSCs showed diverse morphologies including ovoid, bipolar, and large, flattened morphology. b In later passages (P4-4th day), most of these MSCs exhibited large, flattened, or fibroblast-like morphology

© De Gruyter