[Electron microscopy study of bacterial adhesiveness]. / Elektronno-mikroskopicheskoe issledovanie adgezivnosti bakterii.

The interaction of Staphylococcus aureus, Yersinia enterocolitica, Y. pseudotuberculosis, Y. intermedia, Y. frederikseni, Y. kristenseni and erythrocytes was studied with the use scanning electron microscopy. Highly adhesive and moderately adhesive Staphylococcus and Yersinia strains displayed both individual coated bacterial cells and groups of cells interconnected by common intercellular matrix on the surface of erythrocytes. In nonadhesive Staphylococcus and Yersinia strains no coating was detected on the surface of bacterial cells. Some of Staphylococcus and Yersinia cells interacting with erythrocytes were at the stage of heteromorphism with different manifestations of L-transformation (cells with cell wall defects, spheroplasts and protoplasts). Heteromorphic cells did not adhere to the surface of erythrocytes.

[Electron microscopic study of pathogenic bacteria on environmental objects]. / Elektronno-mikroskopicheskoe issledovanie patogennykh bakterii na ob"ektakh vneshnei sredy.

The morphological picture of different bacteria (Salmonella typhimurium, Proteus vulgaris, Klebsiella pneumoniae, Pseudomonas aeruginosa, Yersinia enterocolitica O3, Y.pseudotuberculosis 1, Y.frederiksenii, Y.intermedia, Y.kristensenii) on environmental objects was studied with the use of scanning electron microscopy (SEM). Bacteria adhered to the surface of pieces of fodder, egg shell, cabbage leaves and form microcolonies, whose morphology was similar to colonies, grown on nutrient media. The cells produced extracellular substances, seen in SEM as integuments. These integuments were gourd to protect the population from the action of unfavorable factors.