Radiation Injuries to Human Fetuses

Developing organisms constitute a highly dynamic system in which rapid cell proliferation, cell migration, and cell differentiation occur. Therefore, it is expected that the radiation response of the embryo as a whole, or of specific tissue, would markedly differ depending upon the stage 206of development. Many animal studies suggest that radiation-induced changes are similar in different species when they are irradiated at an equivalent stage of development. ^{1 , 2}