| global ecology | <study> The study of the relationship of organisms to each other and to their environment on a global scale. (09 Oct 1997) |
|---|---|
| human ecology | The relations of persons to their total (biologic and social) environment. (05 Mar 2000) |
| ecology | <study> The scientific study of the relationship of organisms to each other and to their environment. (09 Oct 1997) |
| 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) |