| Ashby method | A differential agglutination method for estimating erythrocyte life span; compatible blood possessing a group factor that the recipient lacks is transferred to the recipient; after the transfusion, sera with potent agglutinins for the recipient's red cells are added to samples of the recipient's blood, and the unagglutinated red cells are counted; using this technique the red cell life span in normal persons is found to be 110 to 120 days. (05 Mar 2000) |
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| auxanographic method | A method for the study of bacterial enzymes in which agar is mixed with the material (e.g., starch or milk) which is to serve as an indicator of the enzyme action and is inoculated and plated; if the bacteria produce enzymes digesting the admixed material, there will be a zone of clearing in the medium about each colony. Synonym: diffusion method. (05 Mar 2000) |
| Barraquer's method | Zonulysis Dissolution of the zonula ciliaris by enzymes (alpha-chymotrypsin) to facilitate surgical removal of a cataract. Synonym: Barraquer's method. Origin: zonule + G. Lysis, dissolution (05 Mar 2000) |
| Beck's method | A permanent opening into the stomach made from its greater curvature. (05 Mar 2000) |
| Bier's method | Treatment of various surgical conditions by reactive hyperaemia. (05 Mar 2000) |
| Born method | Wax plate reconstruction, the making of three-dimensional models of structures from serial sections; it depends on the building up of a series of wax plates, cut out to scaled enlargements of the individual sections involved in the region to be reconstructed. (05 Mar 2000) |
| Bradford method | <investigation> Method for determining protein concentration based upon the binding of Coomassie Brilliant Blue to protein and consequent shift in absorption maximum of the dye. (18 Nov 1997) |
| Brasdor's method | Treatment of aneurysm by ligation of the artery immediately below (on the distal side of) the tumour. (05 Mar 2000) |
| Callahan's method | A method of filling the root canals of teeth by dissolving gutta-percha cones in a chloroform-rosin medium within the root canal. Synonym: Callahan's method, Johnson's method. (05 Mar 2000) |
| capture-recapture method | Originally, a technique developed by biologists to track wild animal populations; now adapted for epidemiological studies of elusive human populations (e.g., prostitutes, teen runaways, IV drug users).By comparing data from several independent overlapping sample frames, it is possible to adjust for missing cases and to generate estimates of the prevalence of a given condition, for example, AIDS infection. (05 Mar 2000) |
| Pachon's method | Cardiography, carried out with the patient lying on the left side. (05 Mar 2000) |
| macro-Kjeldahl method | A procedure for analyzing the content of nitrogenous compounds in urine, serum, or other specimens, usually to determine relatively large amounts of nitrogen (e.g., 20 to 100 mg); the specimen is treated with a digestion mixture (copper sulfate and sulfuric acid), heated thoroughly, and made alkaline with a solution of sodium hydroxide; ammonia is then distilled from the mixture, trapped in a boric acid-indicator solution, and titrated with standard hydrochloric or sulfuric acid. (05 Mar 2000) |
| Gartner's method | A method of measuring venous pressure, based upon Gartner's vein phenomenon; with the patient sitting erect, a vein is selected on the back of the hand which is held dependent, well below the level of the right atrium, and then is raised slowly; when the vein is observed to collapse, the distance between its level and that of the atrium is measured with a millimeter rule; this distance gives the venous pressure in millimeters of blood; thus the vein itself is used as a manometer communicating with the right atrium; highly inaccurate, especially in elderly subjects. (05 Mar 2000) |
| paracelsian method | The use of chemical agents only in the treatment of disease. (05 Mar 2000) |
| parallax method | Localization of a foreign body by observing the direction of its motion on a fluoroscopic screen while moving the X-ray tube or the screen. (05 Mar 2000) |