[Social aspects in the activities of radiodiagnostic services].

Results of sociological investigation of the staff members and patients of radiodiagnosis departments of treatment and prophylaxis institutions of St. Petersburg are analyzed. Anonymous questionnaires were distributed in 50 institutions of different profiles among 200 staff members (physicians--roentgenologists and radiologists, and x-ray laboratory assistants) and 300 patients (from x-ray rooms and radiodiagnosis departments).

[Effect of immunization on the radioresistance of mice to the action of 90Sr].

The preliminary immunization with heated Proteus vulgaris culture introduced in a single injection was found to have a positive influence on the resistance of white mice to radiation emitted by incorporated 90Sr. This effect was manifested by an increase in the survival rate and the mean survival time of the animals, as well as by their increased physical endurance, and the stimulation of recovery process in the spleen.