Fig. 7

Chondrogenic ability of P1 synovial MSCs. A Gross appearance of chondrogenic pellets. B Representative images after safranin O/fast green staining. C Pellet wet weight. Data are presented as the mean ± SD of three replicate pellets. D Quantification of glycosaminoglycan (GAG) and DNA. The GAG content was standardized to DNA content (GAG/DNA). Data are presented as the mean ± SD of three replicate pellets. E Quantification of chondrogenic genes. Data are presented as the mean ± SD of three replicate pellets. **p < 0.01