| BSS | Bachelor of Sanitary Science; balanced salt solution; Bernard-Soulier syndrome; black silk suture; b... |
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| B&W | black and white [milk of magnesia and cascara extract] |
| BWST | black widow spider toxin |
| BWSV | black widow spider venom |
| FAN | fuchsin, amido black, and naphthol yellow |
| asherman disease | <radiology> Uterine synechiae, linear, lucent defects in uterus on HSG, usually secondary to endometrial trauma (D&C, etc.) (12 Dec 1998) |
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| atherosclerotic vascular disease | <cardiology> The progressive narrowing and hardening of the arteries over time. This is known to occur to some degree with aging, but other risk factors that accelerate this process have been identified. These factors include: high cholesterol, high blood pressure, smoking, diabetes and family history for atherosclerotic disease. (27 Sep 1997) |
| Aujeszky's disease | A highly contagious herpes virus infection affecting the central nervous system of swine, cattle, dogs, cats, rats, and other animals. (12 Dec 1998) |
| Aujeszky's disease virus | A herpesvirus causing pseudorabies in swine. Synonym: Aujeszky's disease virus. (05 Mar 2000) |
| Australian X disease | A severe encephalitis with a high mortality rate occurring in the Murray Valley of Australia; the disease is most severe in children and is characterised by headache, fever, malaise, drowsiness or convulsions, and rigidity of the neck; extensive brain damage may result; it is caused by the Murray Valley encephalitis virus (genus Flavivirus). Synonym: Australian X disease, Australian X encephalitis. (05 Mar 2000) |
| Australian X disease virus | A group B arbovirus of the genus Flavivirus that causes Murray Valley encephalitis; it is transmitted by Culex mosquitoes, and also infects birds and horses. Synonym: Australian X disease virus, MVE virus. (05 Mar 2000) |
| autoimmune disease | <disease> A disease process that involves the production of host antibodies to host tissue. (27 Sep 1997) |
| aviator's disease | Syndrome resembling decompression sickness occurring in occupants of airplanes that reach very high altitudes without adequate pressurization of the cabin. See: decompression sickness. (05 Mar 2000) |
| Ayerza's disease | <syndrome> Sclerosis of the pulmonary arteries in chronic cor pulmonale; associated with severe cyanosis, it is a condition resembling polycythemia vera but resulting from primary pulmonary arteriosclerosis or primary pulmonary hypertension and characterised by plexiform lesions of arterioles. Synonym: Ayerza's disease, cardiopathia nigra, plexogenic pulmonary arteriopathy. (05 Mar 2000) |
| Azorean disease | A rare form of hereditary ataxia, characterised by onset in early adult life of progressive, spinocerebellar and extrapyramidal disease with external ophthalmoplegia, rigidity dystonia symptoms, and, often, peripheral amyotrophy; found predominantly in people of Azorean ancestry; autosomal dominant inheritance. Synonym: Azorean disease, Portuguese-Azorean disease. Origin: Surnames of two families studied in major descriptions of the disease. (05 Mar 2000) |
| bacterial wilt disease | <botany> A plant disease common in cucumber and muskmelon caused by the bacteria Erwinia tracheiphila which causes wilting and shriveling of the stems and leaves. (09 Oct 1997) |
| Baelz' disease | An acquired disorder, of unknown aetiology, of the lower lip characterised by swelling, ulceration, crusting, mucous gland hyperplasia, abscesses, and sinus tracts. Synonym: Baelz' disease, myxadenitis labialis, Volkmann's cheilitis. (05 Mar 2000) |
| Balo's disease | Encephalitis that is clinically similar to adrenoleukodystrophy, but pathologically characterised by concentric globes or circles of demyelination of cerebral white matter separated by normal tissue. Synonym: Balo's disease. (05 Mar 2000) |
| Baltic myoclonus disease | One of the familial light sensitive myoclonic epilepsies. Unlike Lafora body polymyoclonus, where inclusion bodies are seen in the brain cells, the prognosis is often favourable. Probably an autosomal recessive disorder. (05 Mar 2000) |
| Bamberger-Marie disease | hypertrophic pulmonary osteoarthropathy |