Table 3. Assessment of H&E-stained images of liver from transplanted animals.

Criteria	Grade 0	Grade 1	Grade 2	Grade 3	Grade 4
Portal inflammation	None	Minimal	Mild	Moderate	Severe
Lobular inflammation	None	Minimal	Mild	Moderate	Severe
Fibrosis	None	Portal	Periportal	Bridging fibrosis	Cirrhosis