| allo- | 1. Other; differing from the normal or usual. 2. Chemical prefix formerly used with amino acids whenever their side chain contained an asymmetric carbon; for example, the alloisoleucines and allothreonines. Origin: G. Allos, other (05 Mar 2000) |
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| alloalbuminaemia | The autosomal dominant condition of having serum albumin of a variant type that differs in mobility on electrophoresis from the usual type A; individuals are heterozygous or homozygous for one of the genes for variant albumin types, a genetic polymorphism without known clinical significance. See: inherited albumin variants. Origin: allo-+ albumin + G. Haima, blood, + -ia (05 Mar 2000) |
| alloantibody | An antibody specific for an alloantigen. Isoantibody is sometimes used in this sense. (05 Mar 2000) |
| alloantigen | <genetics, immunology> Individuals of a species differ in alleles (are allogeneic) and the antigenic differences will cause an immune response to allografts. The antigens concerned are often of the histocompatibility complex and are referred to as alloantigens. (18 Nov 1997) |
| allobarbital | 5,5-Diallylbarbituric acid;a hypnotic with intermediate duration of action. (05 Mar 2000) |
| allocentric | Characterised by or denoting interest centreed in other persons rather than in one's self. Compare: egocentric. Synonym: heterocentric. Origin: allo-+ G. Kentron, centre (05 Mar 2000) |
| allochetia | An obsolete term for passage of faeces through a fistula or other false passage. Origin: allo-+ G. Chezo, to defecate (05 Mar 2000) |
| allochiria | A form of allachesthesia in which the sensation of a stimulus in one limb is referred to the contralateral limb. Synonym: allesthesia, alloesthesia, Bamberger's sign. Origin: allo-+ G. Cheir, hand (05 Mar 2000) |
| allocholane | Original term for 5alpha-cholane. (05 Mar 2000) |
| allocholesterol | Cholest-4-en-3b-ol;an isomer of cholesterol, differing in the position of the one double bond. Synonym: coprostenol. (05 Mar 2000) |
| allochroic | Changed or changeable in colour; relating to allochroism. (05 Mar 2000) |
| allochroism | A change or changeableness in colour. Origin: allo-+ G. Chroa, colour (05 Mar 2000) |
| allochroite | <chemical> See Garnet. Source: Websters Dictionary (01 Mar 1998) |
| allochromasia | Change of colour of the skin or hair. Origin: allo-+ G. Chroma, colour (05 Mar 2000) |
| allochthonous | <ecology> Derived from outside a system, such as the leaves of terrestrial plants that fall into a stream. Compare: autochthonous. (09 Oct 1997) |