| DAT | delayed-action tablet; dementia Alzheimer's type; dental aptitude test; diacetylthiamine; diet as to... |
|---|---|
| DDC | dangerous drug cabinet; dideoxycytidine; diethyl-dithiocarbamate; direct display console; diverticul... |
| IDA | idamycin; image display and analysis; iminodiacetic acid; insulin-degrading activity; iron deficienc... |
| SCID | severe combined immunodeficiency [syndrome]; soft copy image display; Structured Clinical Interview ... |
| SSD | shaded surface display; single saturating dose; Social Security disability; source-skin distance; so... |
| DD | Differential Display |
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| DDPCR | Differential Display PCR |
| DDRT-PCR | Differential Display Reverse Transcriptase Polymerase Chain Reaction |
| DD-PCR | Differential display polymerase chain reaction |
| DDRT-PCR | Differential display reverse transcription PCR |
| differential display PCR | Method of image formation in the light microscope based on the method proposed by Nomarski (though strictly speaking all forms of optical microscopy rely to a greater or lesser extent on differential interference). The light beam is split by a Wollaston prism in the condenser, to form slightly divergent beams polarized at right angles. One passes through the specimen (and is retarded if the refractive index is greater) and one through the background nearby: the two are recombined in a second Wollaston prism in the objective and interfere to form an image. The image is spuriously three dimensional the nucleus, for example: appears to stand out above the cell (or be hollowed out) because it has a higher refractive index than the cytoplasm. The Nomarski system has the advantage that there is no phase halo, but the contrast is low and image formation with crowded cells is poor because the background does not differ from the specimen. (18 Nov 1997) |
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| affect display | Facial expressions, postures, and gestures indicating emotional states. (05 Mar 2000) |
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| data display | The visual display of data in a man-machine system. An example is a cathode ray tube display in which certain data can be called for from the computer and presented on the screen. (12 Dec 1998) |
| display | 1. To unfold; to spread wide; to expand; to stretch out; to spread. "The northern wind his wings did broad display." (Spenser) 2. To extend the front of (a column), bringing it into line. 3. To spread before the view; to show; to exhibit to the sight, or to the mind; to make manifest. "His statement . . . Displays very clearly the actual condition of the army." (Burke) 4. To make an exhibition of; to set in view conspicuously or ostentatiously; to exhibit for the sake of publicity; to parade. "Proudly displaying the insignia of their order." (Prescott) 5. To make conspicuous by large or prominent type. 6. To discover; to descry. "And from his seat took pleasure to display The city so adorned with towers." (Chapman) Synonym: To exhibit, show, manifest, spread out, parade, expand, flaunt. Origin: OE. Displaien, desplaien, OF. Despleier, desploier, F. Deployer; pref. Des- (L. Dis-) + pleier, ploier, plier, F. Ployer, plier, to fold, bend, L. Plicare. See Ply, and cf. Deploy, Splay. Source: Websters Dictionary (01 Mar 1998) |
| automated differential leukocyte counter | An instrument using digital imaging or cytochemical techniques to differentiate leukocytes. (05 Mar 2000) |
| Begg light wire differential force technique | An orthodontic appliance utilizing small gauge labial wires with expansion and contraction loops formed into it and attached to bands fitted to individual teeth; sometimes called Begg light wire differential force technique. (05 Mar 2000) |
| calorimetry, differential scanning | Differential thermal analysis in which the sample compartment of the apparatus is a differential calorimeter, allowing an exact measure of the heat of transition independent of the specific heat, thermal conductivity, and other variables of the sample. (12 Dec 1998) |
| white blood cell differential | <haematology> The white blood cell differential is a percentage of each type of white blood cell based on a count of 100 white cells. A change in the white blood cell type (to neutrophils or bands) can indicate a bacterial infection. Neutrophils, bands, lymphocytes, monocytes, basophils and eosinophils are all included. (13 Nov 1997) |
| semantic differential | Analysis of word concepts by the association of polar adjectives, e.g., good-bad, with the concept, father. The adjectives are usually scaled in 7 steps. The subject's placement of the concept on the adjectival scale indicates the connotative meaning of the concept. (12 Dec 1998) |
| diagnosis, differential | The determination of which two or more diseases with similar symptoms is the one from which a patient is suffering from based on an analysis of the clinical data. (27 Sep 1997) |
| differential | 1. Relating to or indicating a difference; creating a difference; discriminating; special; as, differential characteristics; differential duties; a differential rate. "For whom he produced differential favors." (Motley) 2. <mathematics> Of or pertaining to a differential, or to differentials. 3. <mechanics> Relating to differences of motion or leverage; producing effects by such differences; said of mechanism. Differential calculus. <mathematics> A portable hoisting apparatus, the same in principle as the differential windlass. A hoisting pulley to which power is applied through a differential gearing. Differential screw, a compound screw by which a motion is produced equal to the difference of the motions of the component screws. Differential thermometer, a thermometer usually with a U-shaped tube terminating in two air bulbs, and containing a coloured liquid, used for indicating the difference between the temperatures to which the two bulbs are exposed, by the change of position of the coloured fluid, in consequence of the different expansions of the air in the bulbs. A graduated scale is attached to one leg of the tube. Differential windlass, or Chinese windlass, a windlass whose barrel has two parts of different diameters. The hoisting rope winds upon one part as it unwinds from the other, and a pulley sustaining the weight to be lifted hangs in the bight of the rope. It is an ancient example of a differential motion. Origin: Cf. F. Differentiel. 1. <mathematics> An increment, usually an indefinitely small one, which is given to a variable quantity. According to the more modern writers upon the differential and integral calculus, if two or more quantities are dependent on each other, and subject to increments of value, their differentials need not be small, but are any quantities whose ratios to each other are the limits to which the ratios of the increments approximate, as these increments are reduced nearer and nearer to zero. 2. A small difference in rates which competing railroad lines, in establishing a common tariff, allow one of their number to make, in order to get a fair share of the business. The lower rate is called a differential rate. Differentials are also sometimes granted to cities. 3. <physics> One of two coils of conducting wire so related to one another or to a magnet or armature common to both, that one coil produces polar action contrary to that of the other. A form of conductor used for dividing and distributing the current to a series of electric lamps so as to maintain equal action in all. <mathematics> Partial differential, the differential of a function of two or more variables, when each of the variables receives an increment. The total differential of the function is the sum of all the partial differentials. Source: Websters Dictionary (01 Mar 1998) |
| differential adhesion | The differential adhesion hypothesis was advanced by Steinberg to explain the mechanism by which heterotypic cells in mixed aggregates sort out into isotypic territories. Quantitative differences in homo and hetero typic adhesion are supposed to be sufficient to account for the phenomenon without the need to postulate cell type specific adhesion systems: fairly generally accepted, although some tissue specific cell adhesion molecules are now known to exist. (18 Nov 1997) |
| differential blood pressure | The arterial blood pressure at corresponding points on the two sides of the body. (05 Mar 2000) |
| differential centrifugation | A technique for separating organellesor other differently-sized cellcomponents in a centrifuge, particles of the same size and weight willsettle out into common layers. (09 Oct 1997) |
| differential diagnosis | The determination of which two or more diseases with similar symptoms is the one from which a patient is suffering from based on an analysis of the clinical data. (27 Sep 1997) |
| differential equation | <epidemiology> The mathematical formulation corresponding to a continuous model; an equation involving derivatives. (05 Dec 1998) |
| differential display |
A technique for detecting those genes that are expressed only under specific conditions; it involves isolation and comparison of mRNA from two or more populations of cells.
Ãâó: www.nature.com/nrg/journal/v6/n1/glossary/nrg1502_...
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| differential display |
A technique for determining differences in gene expression under two different conditions or between two tissues.
Ãâó: www.genpromag.com/Glossary~LETTER~D.html
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