Triglyceride and total cholesterol content in the livers of Lean and Fat mice. A. Hepatic trygliceride levels. The liver of Lean mice contains significantly lower (*P < 0.05) amounts of triglycerides. Average values for mg of triglycerides per mg of liver proteins with standard errors are displayed. B. Total hepatic cholesterol levels. Despite that cholesterol biosynthesis genes showed increased mRNA expression in the liver of Lean mice (Table 3), total liver cholesterol does not differ significantly from the Fat line. Average values for mg of total cholesterol per mg of liver proteins with standard errors are displayed.