Abstract
Two groups (males and females) of weanling rats were given a vitamin E-free basal diet for 127 days with a tocopherol supplement. Two similar groups were given the unsupplemented diet and when killed were vitamin E -deficient. The unsaponifiable fractions from liver, heart and kidney were chromatographed on alumina. Ubiquinone contents of approx. 120, 110, 230 and 25 ug /g were found for liver, kidney, heart and testes. The vitamin E status had no striking influence on the amounts of hydrocarbon, sterol or ubiquinone obtained from the different tissues.

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