title: [Effect storage temperature on the biological properties of Leptospira].
abstract: No essential changes occurred in the morphology, viability and agglutinability of 212 Leptospira strains belonging to 20 serological groups during 2-year storage in ampoules at temperatures of -60 to -70 degrees C, and 18 to 24 degrees C. After storage lasting 3 and 4 years viability was retained, respectively, by 95.75 and 78.5% of the strains stored at a temperature of -60 to -70 degrees C and by 90.9 and 70% of the strains stored at room temperature. During 4 years of storage at room temperature the agglutinability of the strains decreased 2-8 times. Most of the strains retained their virulence unchanged for 2 years at a temperature of -60 to -70 degrees C.
mesh_terms: D000372:Agglutination Tests; D000818:Animals; D006224:Cricetinae; D007919:Leptospira / Q000472:pathogenicity*; D007928:Lethal Dose 50; D008647:Mesocricetus; D011309:Preservation, Biological; D013696:Temperature; D013997:Time Factors; D014774:Virulence
vernacular_title: Vliianie temperatury khraneniia na biologicheskie svoĭstva leptospir.