Fig. 5From: Pericellular collagen I coating for enhanced homing and chondrogenic differentiation of mesenchymal stem cells in direct intra-articular injectionCondensation and chondrogenic differentiation. a Macroscopic view of MSC and MSC-PCC pellet groups cultured in 1-cm centrifuge tube at 0 h and 48 h. b SEM images of cell pellets under 600×, 2000×, and 5000× magnification. c. Expression levels of N-cadherin in MSC and MSC-PCC pellet groups cultured after 18 h (n = 3 in each group). *p < 0.05. d RT-qPCR of col. I, col. II, SOX-9, and aggrecan in MSC and MSC-PCC pellets cultured after 14 days (n = 3 in each group). MSC mesenchymal stem cell, PCC pericellular collagen I coating. **p < 0.01Back to article page