| pyogenic bacterium | A bacterium that causes a pyogenic infection, such as the pyogenic cocci (staphylococci, streptococci, pneumococci, meningococci) and Haemophilus influenzae. (05 Mar 2000) |
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| bacterium | <microbiology> A tiny, unicellular, prokaryotic organism that reproduces by cell division and usually has a cell wall, can be shaped like a sphere, rod or spiral and can be found in virtually any enviroment. (09 Oct 1997) |
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| Binn's bacterium | A type of the typhoid-paratyphoid subgroups of the nonlactose-fermenting bacteria. (05 Mar 2000) |
| blue-green bacterium | <organism> Modern term for the blue green algae, prokaryotic cells that use chlorophyll on intracytoplasmic membranes for photosynthesis. The blue green colour is due to the presence of phycobiliproteins. Found as single cells, colonies or simple filaments. In Anabaena, in which the cells are arranged as a filament, heterocysts capable of nitrogen fixation occur at regular intervals. According to the endosymbiont theory Cyanobacteria are the progenitors of chloroplasts. (18 Nov 1997) |
| Chauveau's bacterium | Former name for Clostridium chauvoei. (05 Mar 2000) |
| sulphate-reducing bacterium | <microbiology> A prokaryote which is able to reduce sulphate SO4 (as a terminal electron acceptor) using electrons donated from organic acids, fatty acids, alcohols or hydrogen (electron donors). (19 Jan 1998) |
| endoteric bacterium | A bacterium that forms an endotoxin. (05 Mar 2000) |
| exoteric bacterium | A bacterium that secretes an exotoxin. (05 Mar 2000) |
| lysogenic bacterium | A bacterium in the symbiotic condition in which its genome includes the genome (probacteriophage) of a temperate bacteriophage; in occasional instances the probacteriophage dissociates from the bacterial genome, develops into vegetative bacteriophage, and then matures, causing lysis of the respective host bacterium and release into the culture medium of infective temperate bacteriophage, formerly, a pseudolysogenic bacterial strain, i.e., a "carrier" strain of bacteriophage of low infectivity. (05 Mar 2000) |
| recurrent pyogenic cholangitis | Repeated attacks of cholangitis, commonly noted among Asians living in Asia, associated with the presence of multiple intrahepatic and extrahepatic bile duct stones and strictures. (05 Mar 2000) |
| granuloma, pyogenic | A usually solitary polypoid capillary haemangioma of the skin and gingival or oral mucosa, often associated with trauma or local irritation, representing a vasoproliferative inflammatory response. It presents as a small erythematous papule that enlarges and may become pedunculated and may become infected and ulcerate with accompanying purulent exudate. The haemangioma without suppuration is called angiogranuloma. Pyogenic granuloma is not a granuloma: the name refers to the mass of inflamed, highly vascular granulation tissue. (12 Dec 1998) |
| pyogenic | <microbiology> Producing pus, pyopoietic which is the liquid inflammatory product made up of cells and a thin fluid called liquor puris Origin: Gr. Gennan = to produce (18 Nov 1997) |
| pyogenic arthritis | Acute inflammation of synovial membranes, with purulent effusion into a joint, due to bacterial infection; the usual route of infection is hemic to the synovial tissue, causing destruction of the articular cartilage, and may become chronic, with sinus formation, osteomyelitis, deformity, and disability. Synonym: purulent synovitis, pyarthrosis, pyogenic arthritis, suppurative synovitis. (05 Mar 2000) |
| pyogenic fever | <microbiology> The invasion of bloodstream by pyogenic organisms. Origin: Gr. Haima = blood (18 Nov 1997) |
| pyogenic granuloma | Granuloma pyogenicum, an acquired small rounded mass of highly vascular granulation tissue, frequently with an ulcerated surface, projecting from the skin or mucosa; histologically, the mass resembles a capillary haemangioma. Synonym: granuloma telangiectaticum. (05 Mar 2000) |
| pyogenic infection | Infection characterised by severe local inflammation, usually with pus formation, generally caused by one of the pyogenic bacteria. (05 Mar 2000) |