Fig. 2

DCS of low concentration could promote the proliferation of chondrocytes. (n = 6, mean ± SD). a MTT assay of the proliferation rates of chondrocytes incubated with DCS of different concentrations. b GAG contents of chondrocytes treated by DCS of different concentrations. ^***P < 0.001 vs Control; ^##P < 0.01, ^###P < 0.001 vs Blank Serum; ^&&P < 0.01, ^&&&P < 0.001 vs ICA-L, ^$$$P < 0.001 vs ICA-M. Abbreviations: DCS, drug conditioned serum; GAG, glycosaminoglycan; MTT, methyl thiazolyl tetrazolium; SD, standard deviation. ICA-L refers to group treated with low dose icariin conditioned serum, ICA-M refers to group treated with middle dose icariin conditioned serum, ICA-H refers to group treated with high dose icariin conditioned serum