Advances in Radiation Biology, Volume 7, provides an overview of the state of knowledge in the field of radiation biology. The book contains six chapters and opens with a study on the exploitation of the unique properties of purified lesion-recognizing enzymes as the basis of assays that monitor the repair of DNA lesions in vivo. This is followed by separate chapters on the effects of radiation on living eukaryotic cells; the ecological effects of ionizing radiation; and the applicability of bacterial models of DNA repair and recovery to UV-irradiated mammalian cells. Subsequent chapters focus on acute radiation effects on the adult nervous system and the repair of DNA modified by cytotoxic, mutagenic, and carcinogenic chemicals.