Our knowledge of the effects of ionizing radiation on the biochemical processes of testes and epididymides is meagre. Enzymatic studies of reproductive organs have been described (Ito, 1966; Gupta & Bawa, 1969), but the immediate effect of radiation in cell injury has been related to the curtailment of biosyntheses of nucleic acids and alterations in their chemical configuration. The events preceding the decrease of nucleic acid syntheses and other metabolic processes during irradiation are not understood. This communication describes the effects of localized γirradiation on phosphatases and their probable rôle in the regulatory mechanisms in the testes and epididymides.
Thirty, normal, white albino rats, weighing 140 to 200 g, were separated to form seven groups, consisting of four to five rats in each group. Rats were irradiated at a single surface dose of 2000
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