Abstract
Summary
Stearic acid-1-C14 or palmitic acid-1-C14 was injected intravenously into rats in the form of albumin-bound free fatty acids. At various intervals thereafter livers, hearts and samples of adipose tissue, skeletal muscle and plasma were taken for determination of total C14 and its distribution among glycerides, phospholipids, cholesterol esters and free fatty acids. At all intervals the ratio (C14 in phospholipid/C14 in glycerides) was greater after injection of C14-labeled stearic acid than after that of labeled palmitic acid. This indicates that preferential incorporation of stearic acid into phospholipids is not limited to incorporation during absorption from the intestines into lymph.
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