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  • Title: Comparison of ovine abortion and non-abortion isolates of Chlamydia psittaci using inclusion morphology, polyacrylamide gel electrophoresis, restriction endonuclease analysis and reactivity with monoclonal antibodies.
    Author: Markey BK, McNulty MS, Todd D, Mackie DP.
    Journal: Vet Microbiol; 1993 May; 35(1-2):141-59. PubMed ID: 8362494.
    Abstract:
    Twelve reference and four Northern Ireland ovine Chlamydia psittaci isolates including ovine abortion, faecal, conjunctivitis and arthritis isolates were compared. Inclusion morphology was shown to provide a useful means of differentiating the abortion and the non-abortion isolates studied. Identical SDS-PAGE polypeptide profiles were produced by the ovine abortion isolates. The polypeptide profiles of the non-abortion isolates were similar to one another and clearly distinct from the abortion isolate profiles. The restriction endonuclease profiles of the abortion isolates were remarkably similar whereas different profiles were produced by most of the non-abortion isolates. Monoclonal antibodies were prepared and characterized. A number of these reacted with all the isolates of chlamydia tested. Three mAbs reacted exclusively with the ovine abortion isolates while four mAbs reacted exclusively with a number of the faecal isolates.
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