[Studies of radioactivity of the blood and urine of rats after intravenous administration of the C-14-labeled gamma isomer of hexachlorocyclohexane].

The results of blood and urine radioactivity investigations carried out on female Wistar rats after intravenous administration of gamma-benzene hexachloride--14C indicate, that the pesticide is absorbed of blood circulation during 6 hr and excreted in urine during 35 days. Very high level of excretion was observed during first four days after injection, middle, expressly decreasing level during 5-th to 14-th day and low level during the remaining days of experiment.