| Bruce, Sir David | <person> British surgeon, 1855-1931. See: Brucella, brucellosis. (05 Mar 2000) |
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| brucella | A genus of gram-negative, aerobic bacteria that causes brucellosis. Its cells are nonmotile coccobacilli and are animal parasites and pathogens. The bacterium is transmissible to humans through contact with infected dairy products or tissue. (12 Dec 1998) |
| brucella abortus | A species of the genus brucella whose natural hosts are cattle and other bovidae. Other mammals, including man, may be infected. Abortion and placentitis are frequently produced in the pregnant animal. (12 Dec 1998) |
| Brucella canis | A species causing epididymitis, brucellosis, and abortion in dogs; occasionally causes mild human disease. (05 Mar 2000) |
| brucella melitensis | A species of the genus brucella whose natural hosts are sheep and goats. Other mammals, including man, may be infected. In general, these organisms tend to be more virulent for laboratory animals than brucella abortus and may cause fatal infections. (12 Dec 1998) |
| brucella serology | <microbiology> An blood analysis that detects the presence of antibodies against Brucella bacteria. This test may need to be repeated since the antibodies increase with duration of infection. (27 Sep 1997) |
| brucella strain 19 vaccine | A live bacterial vaccine prepared from an attenuated variant strain of Brucella abortus (strain 19); used for vaccinating cattle against brucellosis. (05 Mar 2000) |
| Brucella suis | A species causing abortion in swine, brucellosis in man, and a wasting disease in chickens; may also infect horses, dogs, cows, monkeys, goats, and laboratory animals. (05 Mar 2000) |
| brucella vaccine | A bacterial vaccine for the prevention of brucellosis in man and animal. Brucella abortus vaccine is used for the immunization of cattle, sheep, and goats. (12 Dec 1998) |
| Brucellaceae | A family of bacteria (order Eubacteriales) containing small, coccoid to rod-shaped, Gram-negative cells which occur singly, in pairs, in short chains, or in groups. The cells may or may not show bipolar staining. Motile and nonmotile species occur; motile cells are peritrichous. V (phosphopyridine nucleotide) and/or X (hemin) factors are sometimes required for growth. Blood serum may be required or may enhance growth. Increased carbon dioxide tension may also favour growth, especially on primary isolation. These organisms are parasites and pathogens which affect warm-blooded animals, including man, rarely cold-blooded animals. It was formerly called Parvobacteriaceae. The type genus is Brucella. (05 Mar 2000) |
| brucellergin | A fat-free nucleoprotein antigen derived from brucella; used in skin tests for brucellosis. (05 Mar 2000) |
| brucellin | A vaccine prepared from several species of Brucella; formerly thought to prevent or cure brucellosis. (05 Mar 2000) |
| brucellosis | <microbiology> A rare infection (less than 200 cases per year in the U.S.) caused by bacteria of the genus Brucella. Human infection results from occupational exposure to infected animals or by ingestion of infected milk, milk products or animal tissue. Symptoms are non-specific and include fever, malaise and weight loss. (27 Sep 1997) |
| brucellosis, bovine | A disease of cattle caused by bacteria of the genus brucella leading to abortion in late pregnancy. Brucella abortus is the primary infective agent. (12 Dec 1998) |
| Ames, Bruce | <person> U.S. Molecular geneticist, *1928. See: Ames assay, Ames test. (05 Mar 2000) |
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| Bart, Bruce | <person> U.S. Dermatologist, *1936. See: Bart's syndrome. (05 Mar 2000) |