| Gell and Coombs Classification | A classification system that differentiates the 4 types of hypersensitivity reactions: Type I: anaphylactic reactions, Type II: cytotoxic reactions, Type III: immune complex reactions, and Type IV: cell-mediated reactions. (05 Mar 2000) |
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| Gell, P | <person> British immunologist. See: Gell and Coombs reactions. (05 Mar 2000) |
| gellan lyase | <enzyme> Cleaves beta-d-glucosyl-1-4-beta-d-glucuronosyl sequence in gellan Registry number: EC 4.2.2.- Synonym: gellanase (26 Jun 1999) |
| Gelle test | A vibrating tuning fork is applied over the mastoid process; if it is heard, the air in the external auditory canal is compressed, by means of a rubber tube inserted into the canal and a hand bulb, thereby fixing the stapes in the oval window, and the sound ceases to be heard, but is again perceived if the air pressure is removed; a test of the mobility of the ossicles. (05 Mar 2000) |
| Gelle, Marie-Ernst | <person> French otologist, 1834-1923. See: Gelle test. (05 Mar 2000) |
| Gellerstedt, Nils | <person> *1896. See: Ceelen-Gellerstedt syndrome. (05 Mar 2000) |