Diet and Fatty Acid Distribution in Subcutaneous Fat and in the Cholesterol-Triglyceride Fraction of Serum of Young Infants*

The purpose of this paper is to report the fatty acid distributon in subcutaneous fat and in the cho- lesterol-triglyceride fraction of serum (C-TG) of four groups of infants, each of whom received a different test diet during the first 2 months of life. The major variables in the test diets were: linoleic acid content (approximately 1.2 to 39.2 per cent of dietary fat) ; percentage of total calories de- rived from fat (approximately 35 to 50 per cent); main source of dietary protein (cow milk and soybean) ; and percentage of total calories derived from protein (approximately 9 to 19 per cent). The protein and lipoprotein electrophoretic patterns, total protein, total lipid, and fractional lipid concentrations in the sera of these same groups of infants were subjects of previous reports (1, 2).