| agglutinins | Substances, usually of biological origin, that cause cells or other organic particles to aggregate and stick to each other. They also include those antibodies which cause aggregation or agglutination of a particulate or insoluble antigen. (12 Dec 1998) |
|---|---|
| agglutinogen | An antigenic substance that stimulates the formation of specific agglutinin, which, under certain conditions, causes agglutination of cells that contain the antigen or particles coated with the antigen. Synonym: agglutogen. Origin: agglutinin + G. -gen, production (05 Mar 2000) |
| agglutinogenic | Capable of causing the production of an agglutinin. Synonym: agglutogenic. (05 Mar 2000) |
| agglutinophilic | Readily undergoing pronounced agglutination. Origin: agglutination + G. Phileo, to love (05 Mar 2000) |
| agglutinoscope | <instrument> An obsolete term for a magnifying glass or simple system of lenses used to observe agglutination in vitro. Origin: agglutination + G. Skopeo, to view (05 Mar 2000) |
| agglutogen | An antigenic substance that stimulates the formation of specific agglutinin, which, under certain conditions, causes agglutination of cells that contain the antigen or particles coated with the antigen. Synonym: agglutogen. Origin: agglutinin + G. -gen, production (05 Mar 2000) |
| agglutogenic | Capable of causing the production of an agglutinin. Synonym: agglutogenic. (05 Mar 2000) |
| aggravation | An increasing in seriousness or severity, an act or circumstance that intensifies or makes worse. (18 Nov 1997) |
| aggrecanase | <enzyme> Cleaves aggrecan from articular cartilage predominantly between glu-373 and ala-374; activity found in bovine articular cartilage, bovine growth plate and chondrocyte monolayer cultures Registry number: EC 3.4.99.- (26 Jun 1999) |
| aggregate | <zoology> A group of species, other than a subgenus, within a genus, or a group of subspecies within a species. An aggregate may be denoted by a group name interpolated in parentheses. (09 Jan 1998) |
| aggregate anaphylaxis | <pharmacology> As opposed to prophylaxis. A system or treatment that leads to damaging effects on the organism. <immunology> Now reserved for those inflammatory reactions resulting from combination of a soluble antigen with IgE bound to a mast cell that leads to degranulation of the mast cell and release of histamine and histamine like substances, causing localised or global immune reponses. Results in an acute allergic reaction with shortness of breath, rash, wheezing, hypotension. See: hypersensitivity. (18 Nov 1997) |
| aggregate fruit | A cluster of fruits formed from the free carpels of one flower. Compare: syncarp. (09 Oct 1997) |
| aggregate glands | Lymphoid organs located in the sub mucosal tissue of the mammalian gut containing very high proportions of IgA secreting precursor cells. The patches have B and T dependent regions and germinal centres. A specialised epithelium lies between the patch and the intestine. Involved in gut associated immunity. (18 Nov 1997) |
| aggregated | Collected together, thereby forming a cluster, clump, or mass of individual units. Synonym: agglomerate, agglomerated, agminate, agminated. (05 Mar 2000) |
| aggregated lymphatic follicles | Lymphoid organs located in the sub mucosal tissue of the mammalian gut containing very high proportions of IgA secreting precursor cells. The patches have B and T dependent regions and germinal centres. A specialised epithelium lies between the patch and the intestine. Involved in gut associated immunity. (18 Nov 1997) |