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Microcystin toxicosis was suspected based on historical administration of a cyanobacteria supplement, associated serum biochemistry abnormalities, and characteristic histopathological changes. Microcystin contamination was confirmed in both supplement containers fed to the horse. Fulminant hepatic failure and encephalopathy progressed resulting in euthanasia. Necropsy findings were consistent with microcystin induced liver failure.<\/jats:p>","DOI":"10.1111\/jvim.14571","type":"journal-article","created":{"date-parts":[[2016,9,9]],"date-time":"2016-09-09T17:18:27Z","timestamp":1473441507000},"page":"1747-1751","source":"Crossref","is-referenced-by-count":18,"title":["Presumptive Iatrogenic Microcystin-Associated Liver Failure and Encephalopathy in a Holsteiner Gelding"],"prefix":"10.1093","volume":"30","author":[{"given":"N.S.","family":"Mittelman","sequence":"first","affiliation":[{"name":"University of Pennsylvania New Bolton Center Hospital for Large Animals Department of Clinical Studies New Bolton Center, , Kennett Square, PA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.B.","family":"Engiles","sequence":"additional","affiliation":[{"name":"Pathobiology, University of Pennsylvania School of Veterinary Medicine , Kennett Square, 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