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Lenticular opacities in young rats as a consequence of maternal diets low in tryptopham and/or vitamin E.

The relative effect upon lens transparency of a diet low in both tryptophan and vitamin E was compared to diets low in either nutrient alone during development. Thirty-three percent of 126 progeny from 19 litters at weaning were found to have either unilateral or bilateral lenticular opacities when the maternal diet during gestation and lactation provided only 75 mg L-tryptophan and 0.1 mg dl-alpha-tocopheryl acetate per 100 g diet. No opacities were seen in 179 progency from 20 litters when tryptophan alone was restricted, and only 6% incidence was detected when vitamin E was the sole limiting nutrient. The data reveal a previously unrecognized association between tryptophan and vitamin E relative to fetal lens development.