chromogen


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Related to chromogen: Auxochrome

chromogen

 [kro´mo-jen]
any substance, itself without color, giving origin to a coloring matter.

chro·mo·gen

(krō'mō-jen),
1. A substance, itself without definite color, which may be transformed into a pigment; denoting especially benzene and its homologues toluene, xylene, quinone, naphthalene, and anthracene, from which the aniline dyes are manufactured.
2. A microorganism that produces pigment.
3. A compound, containing a chromophore, which is colorless if that chromophore is removed.

chromogen

/chro·mo·gen/ (kro´mah-jen) any substance giving origin to a coloring matter.

chromogen

(krō′mə-jən)
n.
1. Chemistry A substance capable of conversion into a pigment or dye.
2. Biology A strongly pigmented or pigment-generating organelle, organ, or microorganism.

chro′mo·gen′ic (-jĕn′ĭk) adj.

chromogen

[krō′mōjən]
a substance that absorbs light, producing color.

chromogen

Chromagen A chemical or compound that reacts to produce a colored end-product, used to detect the presence of a substance of interest; chromogens are critical detectors in immunoenzymatic reactions. See Porter-Silber chromagen.

chro·mo·gen

(krō'mō-jen)
1. A substance, itself without definite color, which may be transformed into a pigment.
2. A microorganism that produces pigment.

chromogen

any substance giving origin to a coloring matter.
References in periodicals archive ?
Patel interpreted a series of experiments as evidence that the chromogen is the monoureide, monosemicarbazone derivative [VIII] of diacetyl.
2] in the presence of peroxidase reacts with chromogens (4-chlorophenol and 4-aminoantipyrine) to yield a colored complex (Fossati and Prencipe 1982).
To prevent ascorbic acid from hindering the peroxide and its generated chromogen, we added ascorbate oxidase to the reagent.
05 ml of the extract were added to 2 test tubes containing 5 ml of working chromogen reagent.
Reactivity was detected using avidin-biotin technique and 3', 3'-diaminobenzidine-tetrahydrochloride dihydrate as the chromogen.
After cooling with tap water, the resulting chromogen was extracted with n-butyl alcohol (4,000 [micro]L) by vigorous shaking.
The equipment must also be possible kaksoisvEnrjEnyksiEn at least two different chromogen Provider shown by crystals (for example, a combination of brown-red chromogen).
These media traditionally incorporate a novel chromogen for differentiation in conjunction with the up-regulation of phosphatase activity: phosphatase is an enzyme present in all MRSA.
The Vectastain Elite ABC Kit (Vector Laboratories, Burlingame, CA, USA) was used, and visualization of antibody binding was through deposition of 3,3'-diaminobenzidine chromogen.
TNF-[alpha] and NF-[kappa]B were visualized with the chromogen 3,3 diaminobenzidine (DAB) and counterstained with Harry's hematoxylin, mounted, and assessed by light microscopy.
Determination of blood glucose using an oxidaseperoxidase system with a non-carcinogenic chromogen.