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  • Title: Changes in serotype caused by cell to cell contact between different Pseudomonas aeruginosa strains from cystic fibrosis patients.
    Author: Ojeniyi B, Rosdahl VT, Høiby N.
    Journal: Acta Pathol Microbiol Immunol Scand B; 1987 Feb; 95(1):23-7. PubMed ID: 3105245.
    Abstract:
    Two Pseudomonas aeruginosa strains, one monoagglutinable and one polyagglutinable, isolated from cystic fibrosis patients were grown in mixed culture. The strains were then separated by means of their azlocillin susceptibility and a number of colonies were tested for serotype and phage type. Changes from monoagglutinable to polyagglutinable reaction and vice versa were observed. The monoagglutinable strain was able to perform bacteriophage infection of the polyagglutinable strain, but no free phages were released. If the donor strain was to produce plaques on the receptor strain, the presence of bacteria belonging to the donor strain was essential.
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