| DR | degeneration reaction; delivery room; deoxyribose; diabetic retinopathy; diagnostic radiology; digit... |
|---|---|
| dr | dorsal root; drain; dram; dressing |
| DRC | damage risk criterion; dendritic reticulum cell; diagnostic reporting console; digitorenocerebral [s... |
| DRD | dihydroxyphenylalanine-responsive dystonia; dorsal root dilator |
| DREZ | dorsal root entry zone |
| blue white colour selection | <molecular biology, procedure> Method for identifying bacterial clones containing plasmids with inserts. Many modern vectors have their polycloning site within a part of the LacZ gene encoding _ galactosidase, which provides _ complementation in an appropriate mutant E. Coli strain. This means that a re ligated (empty) vector will produce blue colonies when grown on plates containing IPTG and X gal, but colonies with a substantial insert in their plasmid's polycloning site are unable to produce functional _ galactosidase and so produce white colonies. (16 Dec 1997) |
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| Borrel's blue stain | <technique> A stain for demonstrating spirochetes, treponemes, and Borrelia organisms, using silver oxide (prepared by means of mixing solutions of silver nitrate and sodium bicarbonate) and methylene blue. (05 Mar 2000) |
| bromophenol blue | <chemical> Alpha,alpha-bis(3,5-dibromo-4-hydroxyphenyl)-alpha-hydroxy-o-toluenesulfonic acid, gamma-sultone. A dye that has been used as an industrial dye, a laboratory indicator, and a biological stain. Pharmacological action: dyes, indicators and reagents. Chemical name: Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2,6-dibromo-, S,S-dioxide (12 Dec 1998) |
| bromphenol blue | <chemical> Alpha,alpha-bis(3,5-dibromo-4-hydroxyphenyl)-alpha-hydroxy-o-toluenesulfonic acid, gamma-sultone. A dye that has been used as an industrial dye, a laboratory indicator, and a biological stain. Pharmacological action: dyes, indicators and reagents. Chemical name: Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2,6-dibromo-, S,S-dioxide (12 Dec 1998) |
| bromthymol blue | <chemical> A pH sensitive dye that has been used as an indicator in many laboratory reactions. Pharmacological action: dyes, indicators and reagents. Chemical name: Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-3-methyl-6-(1-methylethyl)-, S,S-dioxide (12 Dec 1998) |
| carbon monoxide-methylene blue oxidoreductase | <enzyme> Molybdenum-containing iron-sulfur flavoprotein from pseudomonas carboxydovorans; forms carbon dioxide Registry number: EC 1.2.3.- Synonym: cm-mb oxidoreductase, carbon monoxide oxidase (26 Jun 1999) |
| Mallory's aniline blue stain | <technique> A method especially suitable for studying connective tissue; sections are stained in acid fuchsin, aniline blue-orange G solution, and phosphotungstic acid; fibrils of collagen are blue, fibroglia, neuroglia, and muscle fibres are red, and fibrils of elastin are pink or yellow. Synonym: Mallory's aniline blue stain, Mallory's triple stain. (05 Mar 2000) |
| Mann's methyl blue-eosin stain | <technique> A stain useful for anterior pituitary and viral inclusion bodies; a mixture of the two dyes stains alpha cell granules red, beta cell granules dark blue, chromophobes gray to pink, colloid red, erythrocytes orange-red, and collagen fibres blue; this method is also useful for enterochromaffin, goblet, Paneth, and pancreatic islet cells; Negri bodies appear red while their nuclei and central granules are blue. (05 Mar 2000) |
| Victoria blue | Any of several blue diphenylnaphthylmethane derivatives; used as a stain in histology. Origin: Queen Victoria (05 Mar 2000) |
| patent blue V | A sulfonated triphenylmethane dye reduced and decolorised with zinc and acetic acid to produce a stable solution; used to demonstrate haemoglobin peroxidase. Synonym: patent blue V. (05 Mar 2000) |
| celestine blue B | A dye recommended as a substitute for haematoxylin when it is unavailable. (05 Mar 2000) |
| cellular blue nevus | A large, acquired blue nevus in which melanocytes are often clear and large, alternating with pigmented spindle cells and which may expand deeply into the subcutis; malignant change is very rare. (05 Mar 2000) |
| rhodanile blue | A dye mixture, considered by some to be a salt of rhodamine B and Nile blue, used to stain keratinised epithelium (red) and fibroblasts (blue), as well as spermatozoa and normal and pathologic acidophilic, basophilic, and certain neutrophilic elements of cells and tissues; used as a substitute for haematoxylin and eosin. (05 Mar 2000) |
| Perls' Prussian blue stain | <technique> A stain for ferric iron as in haemosiderins, using potassium ferrocyanide in acetic acid or dilute hydrochloric acid followed by a red counterstain such as safranin O or neutral red; various haemosiderins and most mineral irons give a blue-green reaction, while nuclei stain red. (05 Mar 2000) |
| methyl blue | A sulfonated triphenylrosaniline dye used as a stain for cytoplasm, collagen, and Negri bodies, and as an antiseptic. (05 Mar 2000) |