Abstract
Summary
Two types of cortical cataract have been produced in salamander larvae by synthetic diets differing in their protein constituents. The first type, rarely detectable in the early stages and with a marked final shrinkage, was caused by a diet of purified casein and by diets of the separate muscle proteins. The second type, with an easily visible early zoning, large fluid content at maturity, and halted later changes, was caused by diets with high hemoglobin content. Prevention of the first type of cataract was attained by dietary supplementation with cystine, while prevention of the second type required all 3 components of glutathione and apparently some additional factor.
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