[Characteristics of the interaction of legionellae and Tetrahymena pyriformis]. 1990

A E Merkurov, and I S Tartakovskiĭ, and B I Marakusha, and N M Gerchikova, and V Iu Litvin

L. pneumophila avirulent strains have been shown to lose their capacity for multiplication in T. pyriformis, while the concentration of the virulent strain increases 1000-fold. The loss of the hemolytic activity of L. pneumophila virulent strain leads to the loss of its capacity for multiplication in infusorians.

UI MeSH Term Description Entries
D007875 Legionella Gram-negative aerobic rods, isolated from surface water or thermally polluted lakes or streams. Member are pathogenic for man. Legionella pneumophila is the causative agent for LEGIONNAIRES' DISEASE.
D002455 Cell Division The fission of a CELL. It includes CYTOKINESIS, when the CYTOPLASM of a cell is divided, and CELL NUCLEUS DIVISION. M Phase,Cell Division Phase,Cell Divisions,Division Phase, Cell,Division, Cell,Divisions, Cell,M Phases,Phase, Cell Division,Phase, M,Phases, M
D006461 Hemolysis The destruction of ERYTHROCYTES by many different causal agents such as antibodies, bacteria, chemicals, temperature, and changes in tonicity. Haemolysis,Extravascular Hemolysis,Intravascular Hemolysis,Extravascular Hemolyses,Haemolyses,Hemolyses, Extravascular,Hemolyses, Intravascular,Hemolysis, Extravascular,Hemolysis, Intravascular,Intravascular Hemolyses
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013769 Tetrahymena pyriformis A species of ciliate protozoa used extensively in genetic research. Tetrahymena pyriformi,pyriformi, Tetrahymena
D014774 Virulence The degree of pathogenicity within a group or species of microorganisms or viruses as indicated by case fatality rates and/or the ability of the organism to invade the tissues of the host. The pathogenic capacity of an organism is determined by its VIRULENCE FACTORS. Pathogenicity

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