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The Journal of Immunology, 1971, 107: 1152-1160.
Copyright © 1971 by The American Association of Immunologists, Inc.

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Immunologic Investigations of Naturally Occurring Canine Thyroiditis1

Gerald J. Mizejewski, Jennifer Baron and Gerald Poissant

From the Veterans Administration Hospital and Department of Internal Medicine (Nuclear Medicine), University of Michigan Medical Center, Ann Arbor, Michigan 48105

Abstract

Naturally occurring canine thyroiditis was characterized in the present study by immunodiffusion, passive hemagglutination, complement fixation, immunofluorescence and skin tests. Canine thyroglobulin and thyroid gland extract were used as sources of antigen in all tests. Thyroid histology was examined in all instances. The study mainly concerned 11 beagles, which were classified as thyroiditis colony dogs. Precipitating antibodies were not detectable, while low titers of PHA and varying titers of CF antibodies were present in the sera of the thyroiditis colony dogs. Among the serologic procedures employed, only the fluorescent antibody (FA) tests were consistently positive. The skin test was generally positive in the less progressive stages of the disease. The dog thyroid extract rather than purified thyroglobulin was required for PHA antibody detection. This latter observation, together with the FA staining patterns obtained, implied involvement of the second colloid antigen. Overall evidence from present and past studies suggested that the development of the canine disorder is similar in many respects to human thyroiditis.

Footnotes

1 This work was supported by Grant HD-00688-09 from the United States Public Health Service.







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