Abstract
When the chromosomes in dividing cells were exposed to higher dosage of irradiation of X-ray, their matrixes showed various abnormal metamorphosis (Fig. 6 I, II, III and IV). It was shown that immediatly after the irradiation, direct proportional relation existed between the frequency of abnormal matrixes and the dose of X-ray (Table 1 and Fig. 5).
The frequency of various stage of abnormal matrixes were affected not only to the increase of the dose of X-ray, but also along with the passage of time after the treatment. Treated with the same dose of X-ray, the abnormality advanced with the passage of time after the irradiation (Table 1 and Fig. 6).
