Abstract
SummaryWhen hamsters were exposed to cold, the relative percentage of various fatty acids in mitochondrial and microsomal membranes of liver cells changed. In mitochondria, the percentage of oleic acid increases, and in microsomes the percentages of oleic increased and palmitic acid decreased. These findings are in contrast to results of earlier studies on whole livers, which showed that under similar conditions, the percentage of stearic acid decreases. There were no changes in fatty acid percentage composition in RBC ghost cells after 5-9 weeks of exposure. These studies also indicate that there were striking differences in the fatty acid composition of membranes of various organelles in the cell.
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