They drank contaminated milk which contains I 131. 3.Medical Exposure Increase in thyoid cancer in kids and young adults treated with x-rays for enlarged tonsils and thymus and nasopharyngeal problems. 2-3x increase in leukemia and cancer of uterus, kidney and bladder in women with pelvic irradiation. 18 in 681 adults and 35 in 218 juveniles while only 0.2 expected. Chromosome damage - exchanges, breaks, and discontinuities.
Irradiation produces both types while chemical carcinogens only produce the former.
Trisomy of chromosome 15 which includes the myc oncogene is found in irradiated mouse thymocytes. Stress response caused by agents that produce a protective response at low doses and are toxic at high doses. C and MAP kinase. Stress response induce by heat, UV and ionizing radiation.