Topics in the studies of biological effects of tritium.

Recent topics in the following studies of biological effects of tritium are reviewed: 1) tritium level in the environment, 2) mechanism of biological conversion of environmental molecular tritium, 3) tritium content of Japanese bodies and foods, 4) uptake and metabolism of molecular tritium in mammals, 5) absorption rate of tritiated water in mammals, 6) metabolism of organically bound tritium in animals, 7) enhanced excretion of tritium from body, 8) RBE of tritium.