Some effects of x-rays on development in
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Villee, Claude A.
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Article
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1946
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John Wiley and Sons
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English
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## EIPHT FIGURE6 A number of investigators, beginning with Friesen ('35, '36) have used x-rays to produce phenocopies. From the earlier experiments it had been supposed that high dosages (4000 r units and up) of x-rays applied to Drosophila larvae and prepupae killed all or almost all of the treat