Fig. 2From: Atomic Force Microscopy-Based Nanoscopy of Chondrogenically Differentiating Human Adipose-Derived Stem Cells: Nanostructure and Integrin β1 ExpressionCharacteristics of hADSc membrane ultrastructure during chondrogenic differentiation. a Changes in cell membrane ultrastructure were assessed after chondrogenic differentiation for 0, 6, and 12 days. b The surface roughness parameters Ra and Rq of cells were measured during chondrogenic induction of hADSc for 0, 6, and 12 daysBack to article page