Abstract
Summary
1) Injections of 1-25 μg of DNP into chicken eggs, prior to incubation resulted in embryonic mortality after 3 days incubation, but did not produce lens changes. 2) Injections of 25-200 μg of DNP after 5 days incubation did not produce lenticular changes. 3) Cataracts were produced in embryos and hatched chicks from eggs injected with 200-500 μg of DNP after 8 days incubation. The size of cataract was roughly the same in hatched chicks as in embryos from the 500 μg group. 4) Injection of 750 μg of DNP after 15 days incubation produced an opacity evident after 20 hours. However, the opacity apparently regressed since the eyes of chicks hatched from this group appeared to be normal.
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