| difarnesyl group | A 30-carbon open chain hexaisoprenoid hydrocarbon radical; occurs as a side chain in vitamin K2. (05 Mar 2000) |
|---|---|
| Dombrock blood group | See Blood Groups appendix. (05 Mar 2000) |
| duffy blood-group system | A blood group consisting mainly of the antigens fy(a) and fy(b), determined by allelic genes, the frequency of which varies profoundly in different races; amorphic genes are common. (12 Dec 1998) |
| I blood-group system | A blood group related both to the abo and p systems that includes several different antigens found in most people on erythrocytes, in milk, and in saliva. The antibodies react only at low temperatures. (12 Dec 1998) |
| quebec group | <geology> The middle of the three groups into which the rocks of the Canadian period have been divided in the American Lower Silurian system. Source: Websters Dictionary (01 Mar 1998) |
| InV group antigen | Allotypic antigens that are present on human kappa immunoglobulin light chains. Synonym: InV group antigen. (05 Mar 2000) |
| one-carbon group transferases | <enzyme> A subclass of transferases that transfer chemical groups containing a single carbon. These include the methyltransferases, the hydroxymethyl and formyl transferases, the carboxyl and carbamoyl transferases, and the amidinotransferases. Registry number: EC 2.1 (12 Dec 1998) |
| taxonomic group | <zoology> A taxon with all its subordinate taxa and their individuals, for example the taxonomic group Insecta consists of all insects and their taxa. (09 Jan 1998) |
| T group | <abbreviation> Training group. (05 Mar 2000) |
| therapeutic group | Any group of patients meeting together for mutual psychotherapeutic, personal development, and life change goals. (05 Mar 2000) |
| encounter group | A form of psychological sensitivity training that emphasizes the experiencing of individual relationships within the group and minimises intellectual and didactic input; the group focuses on the present rather than concerning itself with the past or outside problems of its members. See: sensitivity training group. (05 Mar 2000) |
| training group | Any group emphasizing training in self-awareness and group dynamics. See: sensitivity training group. (05 Mar 2000) |
| ethnic group | A social group characterised by a distinctive social and cultural tradition maintained from generation to generation, a common history and origin and a sense of identification with the group; members of the group have distinctive features in their way of life, shared experiences and often a common genetic heritage; these features may be reflected in their experience of health and disease. (05 Mar 2000) |
| experimental group | A group of subjects exposed to the variable of an experiment, as opposed to the control group. (05 Mar 2000) |
| K blood group | K blood group See Kell blood group, Blood Groups appendix. (05 Mar 2000) |