FIG. 7.

a: Graph shows a linear relationship between PPG and nonzero fibrosis scores in fibrosis rats (r2 = 0.90, P < 0.05, with 95% confidence interval). b: Graph shows the PPG of early fibrosis (FS = 1 and 2) and moderate fibrosis (FS = 3) was significantly different from that of severe fibrosis (FS = 5). Bars: SEM.