Supports projects associated with epidemiologic and worker medical surveillance and the United States Transuranium and Uranium Registries. The United States Transuranium and Uranium Registries analyze the distribution of radioactive elements in the body to ensure that radiological protection standards and workplace control measures for occupational exposures to plutonium, uranium, and other long-lived radioactive materials are protective of worker health. Supports the Russian health effects studies. The Russian Health Effects Studies are a joint effort by the United States and Russia to conduct epidemiologic studies on the health effects of exposure to radiation.