Figure 4. Genistein and p38 signal pathway inhibitor SB203580 attenuate the degeneration of NPCs and inhibit the phosphorylation of p38. (A) Protein expression of COL2A, aggrecan, and collagen X in NPCs treated with Genistein or SB203580. (B) Quantification of COL2A protein expression. *p<0.05 (C) Quantification of aggrecan protein expression. *p<0.05 (D) Quantification of collagen X protein expression. *p<0.05 (E) Protein expression of p38 and p-p38 in NPCs treated with Genistein or SB203580. (F) Quantification of p38 MAPK protein expression. *p<0.05 (G) Quantification of p-p38 MAPK protein expression. *p<0.05