Membrane degeneration of hepatocytes with subsequent generation of aspartate transaminase (AST), alanine transaminase (ALT), alkaline phosphatase (ALP), lactate dehydrogenase (LDH), and γ-glutamyltransferase (γ-GT), the marker enzymes of hepatotoxicity, centrilobular necrosis, and steatosis, are the consequences of CCl4-induced lipid peroxidation [5]. The gene discussed is GPT; the disease is steatosis.