HMOX1 and chronic hepatitis: The liner regressive equation was y = 0.4120x − 9.3727 (R = 0.9062, P < 0.05) from the AUCs of Sal B to the HO-1-OD/V (%) in portal triads at d0, d28, d56, and d84 in the progression of CCl4-induced chronic hepatitis.