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It should be noted that a total number of dysembryogenesis stigmas in an individual child must be taken into consideration in the formation of risk groups. Children with an increased number of stigmas (more than 7 in one child) are thought to be at high risk only of somatic pathology but also of the given helminthiasis and should be urgently examined for enterobiasis.

It was established that during cast-iron welding unfavourable factors of this production are welding aerosols, thermal and physical loads, radiation of the optical range. Results of detailed medical screening evidence that 80% of cast-iron welders showed pathology of the internal organs. Diseases of the bronchopulmonary apparatus occupy the leading place and are registered in every second cast-iron welder. The incidence rises with increased length of work and age.

The Soviet anthelminthic agent medamine has been synthesized at the Institute of Medical Parasitology and Tropical Medicine, USSR Ministry of Public Health and the Institute of Plant Chemistry, Academy of Sciences of the Uzbek SSR and is produced at the Tashkent Chemical Pharmaceutical Plant. It is used for one-day treatment of enterobiasis which is to be repeated in 2-3 weeks. A daily drug dose is 10 mg per kg body weight, given 3 times a day after meals. The efficacy of therapy was 92 +/- 4% and 100 +/- 2% after the first and second course of treatment, respectively.

The possibility of concentrating proteases from Streptomyces griseus by the ultrafiltration technique using Soviet membranes of the MB-I-IV type was explored. This method allowed a 3-10 fold reduction of the native solution of enzymes and their simultaneous purification from by-products.