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  • Title: Respiratory disease in rats associated with a filamentous bacterium: a preliminary report.
    Author: van Zwieten MJ, Solleveld HA, Lindsey JR, de Groot FG, Zurcher C, Hollander CF.
    Journal: Lab Anim Sci; 1980 Apr; 30(2 Pt 1):215-21. PubMed ID: 6302389.
    Abstract:
    A naturally occurring, chronic disease of the respiratory tract was investigated from the time of its onset to completion of life-time studies in a colony of rats. The disease was characterized by peribronchial lymphoid cuffing, suppurative bronchitis, bronchiectasis and bronchial abscesses. Its onset in the colony occurred a few months after an epizootic of Sendai virus infection. Limited retrospective serological testing indicated that Mycoplasma pulmonis may have been present in the colony at that time and continued to persist throughout life in some rats in the colony. Although of uncertain significance, light and electron microscopy consistently demonstrated many filamentous bacteria between the cilia on respiratory epithelium and free in bronchial exudate in these cases. Attempts to culture this organism on artificial media were unsuccessful.
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