| oral teeth | <dentistry> Your centrals, laterals, and cuspids. These are the teeth in the front of your mouth. (08 Jan 1998) |
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| oral ulcer | A loss of mucous substance of the mouth showing local excavation of the surface, resulting from the sloughing of inflammatory necrotic tissue. It is the result of a variety of causes, e.g., denture irritation, aphthous stomatitis (stomatitis, aphthous), noma, necrotizing gingivitis (gingivitis, necrotizing, ulcerative), toothbrushing, and various irritants. (12 Dec 1998) |
| oral vestibule | That part of the mouth bounded anteriorly and laterally by the lips and the cheeks, posteriorly and medially by the teeth and/or gums, and above and below by the reflections of the mucosa from the lips and cheeks to the gums. Synonym: vestibulum oris, buccal cavity, vestibule of mouth. (05 Mar 2000) |
| encephalopathy, bovine spongiform | Scrapie-like neurological disorder of cattle. The infection appears to be caused by the consumption of scrapie-infected ruminant-derived protein (prions). (12 Dec 1998) |
| enteric cytopathogenic bovine orphan virus | Former name for early isolates of bovine enteroviruses. Synonym: enteric cytopathogenic bovine orphan virus. (05 Mar 2000) |
| enzootic bovine leukosis | A lymphoid neoplastic disease in cattle caused by the bovine leukaemia virus. Enzootic bovine leukosis may take the form of lymphosarcoma, malignant lymphoma, or leukaemia but the presence of malignant cells in the blood is not a consistent finding. (12 Dec 1998) |
| ephemeral fever virus, bovine | The type species of ephemerovirus causing disease in cattle. Transmission is by haematophagous arthropods and the virus has been isolated from both culicoides and mosquitoes. (12 Dec 1998) |
| epizootic bovine abortion | An infectious disease of cattle transmitted by the tick Ornithodoros coriaceus and manifested as abortion or weak calves at birth; occurs in the foothills of California, Nevada, and Oregon. Synonym: foothill abortion. (05 Mar 2000) |
| trypanosomiasis, bovine | Infection in cattle caused by various species of trypanosomes. (12 Dec 1998) |
| tuberculosis, bovine | An infection of cattle caused by mycobacterium bovis. It is transmissible to man and other animals. (12 Dec 1998) |
| tuberculosis, oral | Tuberculosis of the mouth, tongue, and salivary glands. (12 Dec 1998) |
| florid oral papillomatosis | Diffuse involvement of the lips and oral mucosa with benign squamous papillomas; microscopically, it resembles verrucous carcinoma, but is not invasive or localised to a specific area of the oral mucosa. (05 Mar 2000) |
| lentiviruses, bovine | A subgenus of lentivirus comprising viruses that produce multi-organ disease with long incubation periods in cattle. (12 Dec 1998) |
| leukaemia virus, bovine | The type species of HTLV-blv viruses that causes a form of bovine lymphosarcoma (enzootic bovine leukosis) or persistent lymphocytosis. (12 Dec 1998) |
| leukoedema, oral | A disorder of the buccal mucosa resembling early leukoplakia, characterised by the presence of filmy opalescence of the mucosa in the early stages to a whitish gray cast with a coarsely wrinkled surface in the later stages, associated with intracellular oedema of the spinous or malpighian layer. (12 Dec 1998) |