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Results of serologic testing, microscopic agglutination test (MAT), for antibody against a panel of pathogenic Leptospira species. A total of 11 samples are depicted. Three horses were tested once, 2 horses were tested twice 3 days and approximately 2 weeks apart. One horse was tested once in the acute stage and on 3 occasions at approximately 2, 3, and 7 months after the 1st sample.
