Immunofluoresent expression of ECM proteins: After 4th week, livers were harvested after perfusing with 4% paraformaldehyde solution and stored in 10% buffered formalin solution. For immunofluoresence assay, the specimens after dewaxing and dehydrating were blocked for nonspecific protein using BSA. Then, the sections were incubated overnight with anti-mouse α-SMA antibody (A): Control (A1), HSC (A2), MSC (A3), HSC+HGF-CNP (A4) and MSC+HGF-CNP (A5); and anti-mouse type I collagen antibody (B): Control (B1), HSC (B2), MSC (B3), HSC+HGF-CNP (B4) and MSC+HGF-CNP (B5). The expression of these proteins was viewed by fluorescent microscopy using secondary antibody tagged with FITC. Both α-SMA and type I collagen expressed high in control, HSC and HSC+HGF-CNP treated groups than MSC and MSC-HGF-CNP treated groups. MSC treatment suppressed the myofibroblasts and consequently made type I collagen disappeared (original magnification ×100).