- 13 4. Cellular changes a. Range of sensitivity of cells (list most sensitive ~ gonads - to least sensitive nerve, muscle, bone) b. 5. Relate sensitivity of nucleus to cytoplasm Effects on the whole organism a, b. Range of survival dose on mammals (guinea pigs 200 r, rabbits 800 r) Compare with non-mammalian radiation (virus, for instance, 1,000,000 r) (1) 6. Point out species variation and position of man Clinical syndrome in man (nausea and vomiting, hematopoietic depression, epilation, bleeding, etc.) a. Special place of hematopoietic response to radiation b, Delayed effects (1) Reduced longevity (a) (2) G. reduction in life expectancy validity of concept at low levels of radiation Production of leukemia and neoplasms (tumors) Relationships of damage mechanisms to dosages l. Aplastic anemia, leukemia, and cancer as a result of exposure to radiation a. Doses at which observable damage occurs; relationship of probability of damage to dose and dose rate; latent periods; doubling doses; relationship to tissue irradiated : JCAE b. Relative importance of cancer and leukemia under various conditions: external source; exposure of various critical organs to radiation from external and internal sources: lungs, gut, thyroid, skeleton, etc, 2

Select target paragraph3