| BRBNS | blue rubber bleb nevus syndrome |
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| BS | Bachelor of Science; Bachelor of Surgery; Bacillus subtilis; Bartter syndrome; base strap; bedside; ... |
| BSA | benzenesulfonic acid; Biofeedback Society of America; bismuth-sulfite agar; bis-trimethylsilyl-aceta... |
| BTB | breakthrough bleeding; bromthymol blue |
| BTBL | bromothymol blue lactose |
| nevus, blue | A benign nevus, usually solitary, representing a localised proliferation of dermal melanocytes, which is manifested by a dark blue to black, moderately firm, rounded, sharply defined nodular tumour composed of spindle-shaped melanocytes with slender cytoplasmic processes, occurring often in association with melanin-laden macrophages in a sclerotic dermis. It is also called dermal melanocytoma and jadassohn-tieche nevus. (12 Dec 1998) |
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| new methylene blue | A basic thiazin dye, C18H22N3SCl, used for supravital staining of reticulocytes in blood smears. (05 Mar 2000) |
| Nile blue A | A basic oxazin dye, C20H20N3OCl, used as a fat and vital stain, and in Kittrich's stain; as an indicator, it changes from blue to purplish red at pH 10 to 11. (05 Mar 2000) |
| indigo blue | Origin: F. Indigo, Sp. Indigo, indico, L. Indicum indigo, fr. Indicus Indian. See Indian. 1. A kind of deep blue, one of the seven prismatic colours. 2. <chemistry> A blue dyestuff obtained from several plants belonging to very different genera and orders; as, the woad, Isatis tinctoria, Indigofera tinctoria, I. Anil, Nereum tinctorium, etc. It is a dark blue earthy substance, tasteless and odorless, with a copper-violet luster when rubbed. Indigo does not exist in the plants as such, but is obtained by decomposition of the glycoside indican. Commercial indigo contains the essential colouring principle indigo blue or indigotine, with several other dyes; as, indigo red, indigo brown, etc, and various impurities. Indigo is insoluble in ordinary reagents, with the exception of strong sulphuric acid. <botany> Chinese indigo, the American herb Baptisia tinctoria which yields a poor quality of indigo, as do several other species of the same genus. Having the colour of, pertaining to, or derived from, indigo. <botany> Indigo berry, the gopher snake. Indigo white, a white crystalline powder obtained by reduction from indigo blue, and by oxidation easily changed back to it; called also indigogen. Indigo yellow, a substance obtained from indigo. Source: Websters Dictionary (01 Mar 1998) |
| Isamine blue | C4OH3ON3O6Na;an acid triarylmethane dye employed as a vital dye and as an elastin stain. Synonym: Isamine blue. (05 Mar 2000) |
| isosulfan blue | C27H31N2NaO6S2;a dye used as a radiographic adjunct to mark lymphatic vessels during lymphography. (05 Mar 2000) |
| thymol blue | A dye used as an acid-base indicator, with a pK value at 1.7 and another at 8.9; red at pH values below 1.2, yellow between 2.8 and 8.0, and blue above 9.6. (05 Mar 2000) |
| toluidine blue | <chemical> A thiazin dye related to methylene blue and Azure A in structure, often used for staining thick resin sections. Typically exhibits metachromasia. (18 Nov 1997) |
| toluidine blue O | A blue basic dye, C15H16N3SCl, used as an antibacterial agent, as a nuclear stain, and to stain metachromatically certain structures (e.g., the granules in mast cells which are believed to contain heparin and cartilage matrix which is rich in chondroitin sulfate), and in electrophoresis to stain RNA, RNase, and mucopolysaccharides; it also antagonises the anticoagulant action of heparin. See: tolonium chloride. (05 Mar 2000) |
| eosin-methylene blue agar | Agar composed of peptone, lactose, and sucrose and containing eosin and methylene blue, used to distinguish between lactose-fermenting and non-lactose-fermenting Gram-negative bacteria. Synonym: EMB agar. (05 Mar 2000) |
| Trypan blue | Disease caused by Trypanosoma. (18 Nov 1997) |
| turnbull's blue | <chemistry> The double cyanide of ferrous and ferric iron, a dark blue amorphous substance having a coppery luster, used in dyeing, calico printing, etc. Cf. Prussian blue, under Prussian. Source: Websters Dictionary (01 Mar 1998) |
| evans blue | <chemical> 6,6'-((3,3'-dimethyl(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis (4-amino-5-hydroxy-1,3-naphthalenedisulfonic acid) tetrasodium salt. An azo dye used in blood volume and cardiac output measurement by the dye dilution method. It is very soluble, strongly bound to plasma albumin, and disappears very slowly. Pharmacological action: dyes. Chemical name: 1,3-Naphthalenedisulfonic acid, 6,6'-((3,3'-dimethyl(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(4-amino-5-hydroxy-, tetrasodium salt (12 Dec 1998) |
| Kluver-Barrera Luxol fast blue stain | <technique> In combination with cresyl violet, a stain useful for demonstrating myelin and Nissl substance. (05 Mar 2000) |
| Koch's blue bodies | Schizonts of Theileria parva, the causative agent of East Coast fever; found principally within endothelial cells of the spleen and lymph nodes. (05 Mar 2000) |