Figure 4.

FN induces PCNA expression. CPCs were seeded on each matrix for 6 hours followed by 24 hours of cyclic strain and lysed. Cell lysate was evaluated by western blot. (a) Representative blots. (b) Quantification by densitometry; n = 4-5; PLL (brown): poly-L-lysine, LN (green): laminin, FN (purple): fibronectin, COL (blue): collagen I, cECM (red): naturally derived cardiac extracellular matrix, PCNA: proliferating cell nuclear antigen, and ∗ represents p < 0.05 by ANOVA.