title: [The cultural properties and virulence of Yersinia].
abstract: Study of the cultivation properties of 82 enterobacterial strains has revealed that the colonies of virulent Y. enterocolitica (serovars O3, O9) and Y. pseudotuberculosis (serovar I) are temperature-sensitive. This sign, closely connected with the presence and expression of the virulence plasmid with a molecular weight of 44-48 MD, is not characteristic of other strains. Virulent Yersinia grown in nutrient agar for 48 hours at 37 degrees C form colonies which are smaller in diameter than those formed during cultivation at 26 degrees C (with the significance of differences t greater than or equal to 4), their diameter at 37 degrees C not exceeding 1.0 mm. The test for the determination of the temperature-sensitive morphology of Yersinia colonies, along with the tests for other virulence markers, is probably suitable for the detection of the causative agents of yersiniosis or pseudotuberculosis.
authors.forename: I V
authors.initials: IV
authors.lastname: Smirnov
authors.forename: G Ia
authors.initials: GIa
authors.lastname: Tseneva
mesh_terms: D003470:Culture Media; D004755:Enterobacteriaceae / Q000145:classification / Q000254:growth & development / Q000472:pathogenicity; D010957:Plasmids; D012703:Serotyping; D013696:Temperature; D013997:Time Factors; D014774:Virulence; D015007:Yersinia / Q000145:classification / Q000254:growth & development* / Q000472:pathogenicity
chemical_list: D003470:Culture Media
vernacular_title: Kul'tural'nye svoĭstva i virulentnost' iersiniĭ.