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chromogen

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chromogen
chromogen (ˈkrəʊmədʒɛn) [f. chromo- 2 + -gen.] (See quots.) spec. in Dyeing, an acid colour used to dye brown.1858 Thudichum Urine 328 The chromogen of indigoferous plants is a peculiar colourless substance. 1879 Watts Dict. Chem. VIII. i. 696 The compound which requires only the presence of a salt-... Oxford English Dictionary
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Auxochrome
They themselves fail to produce the colour, but instead intensify the colour of the chromogen when present along with the chromophores in an organic compound The presence of an auxochrome in the chromogen molecule is essential to make a dye. wikipedia.org
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auxochrome
auxochrome (ˈɔːksəʊkrəʊm) [G. (O. N. Witt 1888, in Ber. d. Deut. Chem. Ges. XXI. i. 325), f. Gr. αὔξ-ειν to increase + -o + χρῶµα colour.] Any salt-forming group that, when combined with a chromogen, produces a dyestuff. Hence auxochromic (-ˈkrəʊmɪk), auxochromous (-ˈkrəʊməs), adjs., defining such g... Oxford English Dictionary
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AEC
main association of colleges and university schools of music in Europe Science and technology 3-amino-9-ethylcarbazole, an immunohistochemistry stain (chromogen wikipedia.org
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Stains: Meaning, Purpose and Components| Microorganisms
A' basic stain (dye), therefore, has a strong affinity for the anionic (negative) constituents of the cell. These stains (dyes) are used to stain the negative charged cellular components (e.g., nucleic acids) because they readily bind and accept the colour of the positively charged cationic chromogen of a basic stain.
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erythrogen
erythrogen (ɛˈrɪθrəʊdʒɛn) [mod. f. Gr. ἐρυθρο- erythro- + -gen2 ‘producer’.] 1. Bot. ‘A term for a variety of the supposed colouring matter of vegetables, called Chromogen, because it produces a red colour with acids’. (Syd. Soc. Lex.) 2. Chem. ‘A crystalline, fatty substance obtained from diseased ... Oxford English Dictionary
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Chromogenic photography
Chromogenic photography is photography that works by a chromogen forming a conventional silver image and then replacing it with a dye image. wikipedia.org
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phyllo-
phyllo- (fɪləʊ-) repr. Gr. ϕυλλο-, combining form of ϕύλλον leaf, in various scientific terms. phyllochromogen (-ˈkrəʊmədʒɛn) Chem. [see chromogen], a constituent of chlorophyll, supposed by Liebermann to give rise, by oxidation or reduction, to the various colouring-matters of flowers. phyllocyanic... Oxford English Dictionary
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P-Dimethylaminocinnamaldehyde
A colorimetric assay based upon the reaction of A-rings with the chromogen. p-Dimethylaminocinnamaldehyde has been developed for flavanoids in beer that wikipedia.org
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chromo-
chromo- (ˈkrəʊməʊ) 1. Chem. Combining form of chromium, as in chromo-carbon, chromo-chloride, chromo-cyanotype, chromo-glucose, etc.1845 Year Bk. of Facts 234 To distinguish it from the cyanotype process of Sir John Herschell..Mr. Hunt proposed to call it Chromo-cyanotype. 1864 Reader 26 Mar. 393/3 ... Oxford English Dictionary
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Digitalis lanata
To reveal the hybridised transcripts, a chromogen can be used which reacts with the alkaline phosphatase to produce a coloured precipitate. wikipedia.org
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hæmo-
hæmo-, hemo- (hiːməʊ, hɛməʊ) before a vowel hæm-, hem- (hiːm, hɛm), repr. Gr. αἱµο-, shortened form of αἱµατο- hæmato-, combining form of αἷµα blood: cf. Gr. αἱµοπώτης = αἱµατοπώτης blood-drinker, αἱµορραγία hæmorrhage. Many words in hæmo- occur also in the fuller form hæmato-. Some of these words h... Oxford English Dictionary
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Lucien Cuénot
experiments Cuénot spent two years working on mice and came to the conclusion that three “mnemons” (genes) are responsible for the production of one “chromogen wikipedia.org
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punicin
punicin Chem. (ˈpjuːnɪsɪn) [See -in1.] † 1. [f. L. pūnicum pomegranate.] (See quots.)1855 Garrod Mat. Med. 154 The root-bark [of the Granaceæ] contains..tannin, and a principle called Punicine has also been detected. 1866 Watts Dict. Chem. IV. 746 Punicin, an acrid uncrystallisable substance obtaine... Oxford English Dictionary
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مولد اللون
يتم تطبيق مصطلح الكروموجين أو مولد اللون أو مولد الصبغة (بالإنجليزية: Chromogen) في الكيمياء على مركب كيميائي عديم اللون (أو ضعيف اللون) يمكن تحويله عن wikipedia.org
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