| haemophilic bacteria | <microbiology> Haemophilic bacteria are bacteria which thrive in the presence of blood. These bacteria all belong to the taxonomic genera of Haemophilus, Bordetella, and Moraxella. They are rod-shaped, gram-negative, nonmotile parasites. (09 Oct 1997) |
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| purple sulphur bacteria | <microbiology> A group of phototrophic prokaryotes containing bacteriochlorophylls a or b and characterised by the ability to oxidize hydrogen sulphide (H2S) and store elemental sulphur inside the cells. (09 Oct 1997) |
| hydrogen carrier | A molecule that, in conjunction with a tissue enzyme system, carries hydrogen from one metabolite (oxidant) to another (reductant) or to molecular oxygen to form H2O. Synonym: hydrogen acceptor. (05 Mar 2000) |
| spiral and curved bacteria | A large, very diverse group of bacteria in which some species are curved, some helical. (12 Dec 1998) |
| sulfur-reducing bacteria | A group of gram-negative, anaerobic bacteria that is able to oxidise acetate completely to carbon dioxide using elemental sulfur as the electron acceptor. (12 Dec 1998) |
| incubatory carrier | An individual capable of transmitting an infectious agent to others during the incubation period of the disease. (05 Mar 2000) |
| Tay-Sachs carrier | <genetics> One who carries the recessive gene that is responsible for Tay-Sachs disease. Genetic testing for this fatal disease is crucial so that Tay-Sachs carriers can be identified and provided with genetic counseling. (27 Sep 1997) |
| electron carrier | <chemistry> A protein which can either accept or donate electrons in oxidation-reduction reactions. (19 Jan 1998) |
| translocation carrier | A person with balanced translocation. (05 Mar 2000) |
| endospore-forming bacteria | A group of rods or cocci whose taxonomic affinities are uncertain. They form endospores, thick-walled bodies formed within the vegetative cells of certain bacteria, able to withstand adverse environmental conditions for prolonged periods. (12 Dec 1998) |
| endosymbiotic bacteria | Bacteria that establish a symbiotic relationship within a eukaryotic cell. For example the nitrogen fixing bacteria of legume root nodules. See: endosymbiont hypothesis. (18 Nov 1997) |
| enteric bacteria | A large group of Gram negative rod-shaped bacteria characterised by a facultatively aerobic metabolism. Many of them are commonly found in the intestines of animals. (09 Oct 1997) |
| faecal coliform bacteria | <gastroenterology, microbiology> Aerobic bacteria found in the colon or faeces, often used as indicators of faecal contamination of water supplies. (09 Oct 1997) |
| ubiquitin carrier protein kinase | <enzyme> A 300 kD kinase consisting of 3 subunits of mws 70, 105 and 120; requires magnesium but inhibited by high concentration; from hela cells Registry number: EC 2.7.10.- (26 Jun 1999) |
| flesh-eating bacteria | A strain of Group A streptococcus which, in severe cases, can destroy tissue as fast as surgeons can cut it out. The rapid destruction of tissue caused by these bacteria is localised, so it is unlikely to be caused by a general overstimulation of the immune system by, for example: superantigen exotoxin A. Instead, the invasive strains of strep A probably have other toxin such as exotoxin B, an enzyme (i.e. A cysteine protease) that destroys tissue by breaking down protein. (09 Oct 1997) |