Representative image of normal liver with very mild steatosis (Panel a); hepatic steatosis with inflammatory cell infiltration (Panel b); steatohepatitis with severe fat accumulation, inflammation and hepatocellular ballooning degeneration (Panel c, The red arrow indicated the hepatocellular ballooning degeneration); hepatic non-cancerous tissue immunostained by cytokeratin 19 (Panel d), HCC (Panels e, f and g), HCC immunostained by cytokeratin 19 (Panel h), hepatic SCC (Panels i, j and k) and hepatic SCC immunostained by cytokeratin 19 (Panel l). The black arrows indicated the border between the non-cancerous tissue and cancerous tissue in Panels e, f, i and j.