(A) Heat map of gene expression for a panel of ECM and growth factor genes in FCF and ACF monolayers expanded for 2–4 passages, with bar graphs showing summarized data for Col1a1 (B), Col3a1
(C), Fn1
(D), Postn
(E), Acta2
(F), Ctgf
(G), Hbegf
(H), and Igf1
(I). The relative mRNA expression was normalized to house keeping gene B2M and shown relative to FCFs as fold change (N=4 independent experiments). *P < 0.05, **P < 0.01.