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Abstract:
A histological study was made of the premature death of Drosophila eggs, 1.5 hrs old, exposed to doses of x radiation from 250 to 3000 r. At various times sfter the irradiation the embryos were fiked by the Huetther method, and the development stage was microscopically determined. The results show that after a dose of 3000 r 75% of the eggs have the histological state of 1.5-hr controls. The distribution of the development stages, compared to the development of controls, is tabulated. None of the irradiated eggs attain the development of the controls.
