EN
Initial experiments have been performed in order to evaluate the ionized radiation of a quartz lamp (UV) as a disinfecting agent combating Toxoplasma gondii. The author has experimentally infestat ed groups of white mice through the intra peritoneal route with parasite emulsion in a physiologic solution of NaCL, in Tyrode's buffer liquid in Hanks's buffer liquid with addition of 10 per cent of bovine serum and in bovine serum subject of UV radiation a distance of 40 cm in a lapse of time from 0 to 60 minutes. The inoculum contained in 0,1 ml of emulsion 5X10 4 of toxoplasmae or about 25.000 D. L. M. The toxoplasmae suspended in a physiologic solution of NaCL, in Tyrode's buffer liquid and in Hanks's buffer liquid we re radiated during 25 minutes and injected through the intraperitoneal route to white mice; they did not cause any lethal issue during the whole observation period of 24 days. Neither was Toxoplasma found in several biologic passages. On the other hand Toxoplasma suspended in bovine serum even after 60 minutes of radiation introduces through the peritoneal route to white mice provoked an acute form of disease. The possibility of application of UV radiation as an disinfecting agent combating Toxoplasma gondii has been discussed.