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-Retinyl Acetate on Growth of Hamsters Fed Vitamin A-deficient Diets
Lung Cancer Branch, National Cancer Institute, Bethesda, Maryland 20014
The capacity of the
isomer of retinyl acetate to support growth in hamsters fed a vitamin A-deficient diet was assessed over a 40-fold dose range. Although decreased relative potency of the
isomer, as compared with the ß isomer, was found, sustained weight gain and survival for 6 months were achieved with a weekly intraperitoneal dose of 300 µg of the
isomer. An intraperitoneal dosage of
-retinyl acetate resulted in greater activity than an oral dosage.
KEY WORDS: vitamin A
-retinyl acetate
1 To whom requests for reprints should be sent.
Manuscript received 22 July 1974.