Abstract
At various times after the intraperitoneal injection of Na acetate-1-C 14 to male Wistar rats, the labelled fatty acids are nonuniformely distributed among the lipids of liver microsomes, mitochondria and cell sap. The changes observed in the specific radioactivity of the neutral and phospholipids support the hypothesis that a transfer of these lipids takes place from the site of synthesis (endoplasmic reticulum) to mitochondria and cell sap. This phenomenon is probably responsible for the decline of microsomal fatty acids in favour of the mitochondrial and soluble fractions. In this connection, the deacylation-reacylation process does not seem to be involved.
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