acids. The lower specific activity of docosahexaenoic acidin the liver but higher specific activity in the brain (Table 6)supports tissue redistribution rather than higher synthesis ofdocosahexaenoic acid under these experimental conditions.The previously reported preferential mobilization of poly-unsaturates from adipose tissue [26] seems likely to haveplayed a role in the marked shift in homeostasis of tissuepolyunsaturates we have observed here.