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Leaves of Crotalaria brevidens, Amaranthus lividus, Gynandropsis gynandra and Corchorus olitorius all grown in Kenya had vitamin C 100 to 150 mu g/g. C. brevidens and A. lividus had most vitamin A, 250 to 300 and 200 mu g/g, respectively.
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Abe et al. (1977) studied this question.
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