| C4 | fourth cervical nerve; fourth cervical vertebra; fourth component of complement |
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| C4a | activated fourth component of complement |
| C5 | fifth cervical nerve; fifth cervical vertebra; fifth component of complement |
| C6 | sixth cervical nerve; sixth cervical vertebra; sixth component of complement |
| C6a | activated sixth component of complement |
| genetic complementation test | A test used to determine whether or not complementation (compensation in the form of dominance) will occur in a cell with a given mutant phenotype when another mutant genome, encoding the same mutant phenotype, is introduced into that cell. (12 Dec 1998) |
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| Geraghty's test | An obsolete test for renal function; after the patient has drunk a glass or two of water, 1 ml of a 0.6% solution of dye is injected hypodermically; the time between this injection and the appearance of a pink tinge in the urine as it falls into an alkaline solution is noted; the amount excreted in each of the next 2 hours is then estimated colourimetrically. Synonym: Geraghty's test, phthalein test, red test, Rowntree and Geraghty test. (05 Mar 2000) |
| Marshall-Marchetti test | Manual deviation of bladder neck during strain or cough to ascertain presence of stress urinary incontinence. Synonym: Bonney test, Marshall-Marchetti test. (05 Mar 2000) |
| Marshall test | Manual deviation of bladder neck during strain or cough to ascertain presence of stress urinary incontinence. Synonym: Bonney test, Marshall-Marchetti test. (05 Mar 2000) |
| Gerhardt's test for acetoacetic acid | In fresh urine a red colour develops upon addition of FeCl3; no colour develops if the urine has first been boiled; this test has low specificity and sensitivity. Synonym: Gerhardt's reaction. (05 Mar 2000) |
| Gerhardt's test for urobilin in the urine | The urobilin is extracted with chloroform and then treated with iodine and potassium hydrate, a fluorescent green colour being produced. (05 Mar 2000) |
| carotid sinus test | Stimulation of one carotid sinus (never both) to produce reflex effects that may slow the heart, reduce the systolic blood pressure or both for diagnostic or, in the case of certain arrhythmias, therapeutic purposes. (05 Mar 2000) |
| germ tube test | A test for the identification of Candida albicans; after a 3-hr incubation in serum, an inoculum of Candida develops tubelike appendages. (05 Mar 2000) |
| carrier test | A test designed to detect carriers of a gene for recessive genetic disorder. For example, carrier testing is done for sickle cell trait, thalassaemia trait, and the Tay-Sachs gene. (12 Dec 1998) |
| Carr-Price test | A quantitative test for vitamin A based on the reaction with antimony trichloride in chloroform. (05 Mar 2000) |
| Master's two-step exercise test | An early and long-used exercise challenge to identify ischemic heart disease using a pair of nine inch steps with a platform on top, the number of trips by the patient arbitrarily chosen and related to age and body weight. See: two-step exercise test. Synonym: Master's two-step exercise test. (05 Mar 2000) |
| Master test | An early and long-used exercise challenge to identify ischemic heart disease using a pair of nine inch steps with a platform on top, the number of trips by the patient arbitrarily chosen and related to age and body weight. See: two-step exercise test. Synonym: Master's two-step exercise test. (05 Mar 2000) |
| red cell adherence test | The diagnostic application of the immune adhesion phenomenon. Synonym: erythrocyte adherence test, immune adhesion test, red cell adherence test. (05 Mar 2000) |
| Casoni intradermal test | A test for hydatid disease in which hydatid fluid is injected intracutaneously; immediate or delayed wheal and flare reaction is positive. Synonym: Casoni skin test. (05 Mar 2000) |
| Casoni skin test | A test for hydatid disease in which hydatid fluid is injected intracutaneously; immediate or delayed wheal and flare reaction is positive. Synonym: Casoni skin test. (05 Mar 2000) |