[Origin of malignant tumors of the upper respiratory and digestive tracts and the ear. 3. Malignant tumors caused by irradiation. general part (author's transl)].

In this part the biophysical and biochemical elements or radiation energy and the effects on tissue are discussed: 1. physical problems, 2. the cell nucleus and other cell organells as primary object of irradiation, 3. varying stages of tumor development caused by irradiation, 4. summation of radiation effects and syncarcinogenesis, 5. the stage of latency in relation to radiation-dosis and other factors, 6. immune depression caused by irradiation.