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The presence of these lesions in other tissues such as the eyeball is very rare and difficult to diagnose. This study describes macroscopic and microscopic pathological findings in a calf with ocular and meningeal tuberculosis.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Case presentation<\/jats:title>\n                <jats:p>March 2019, an eight-month-old Holstein Friesian calf was identified in a dairy farm located in central Mexico with a clinical cough, anorexia, incoordination, corneal opacity and vision loss. At necropsy, pneumonia, lymphadenitis, meningitis, and granulomatous iridocyclitis were observed. The histopathological examination revealed granulomatous lesions in lung tissue, lymph nodes, meninges and eyes with the presence of acid-fast bacilli associated with <jats:italic>Mycobacterium spp.<\/jats:italic><\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>To the best of our knowledge, this is the first report that describes macroscopic and microscopic pathological findings of ocular tuberculosis in cattle. This report highlights the importance of considering bovine tuberculosis in the differential diagnosis of corneal opacity and loss of vision in cattle.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12917-021-02893-y","type":"journal-article","created":{"date-parts":[[2021,5,8]],"date-time":"2021-05-08T09:03:07Z","timestamp":1620464587000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Ocular tuberculosis in a calf."],"prefix":"10.1186","volume":"17","author":[{"given":"Jacobo","family":"Carrisoza-Urbina","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mario A.","family":"Bedolla-Alva","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mireya","family":"Ju\u00e1rez-Ram\u00edrez","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jos\u00e9 A.","family":"Guti\u00e9rrez-Pabello","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,5,8]]},"reference":[{"key":"2893_CR1","doi-asserted-by":"publisher","first-page":"e28383","DOI":"10.1371\/journal.pone.0028383","volume":"6","author":"SM Thayil","year":"2011","unstructured":"Thayil SM, Albini TA, Nazari H, Moshfeghi AA, Parel J-MA, Rao NA, et al. 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