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 ?
8 M or 2 M PTB reagent did not affect the intensity of the chromogen generated.
The chromogen 4-chloro-1-naphthol (Sigma) was dissolved in a (stock solution, 3 mg/mL; Merck, Darmstadt, Germany) and stored in a dark bottle at room temperature for up to 10 days.
Red wine, unlike white, contains a highly-pigmented substance known as chromogen," explained Dr.
All slides were incubated with the primary antibody for 10 minutes at RT (room temperature), then incubated with the secondary antibody, a biotinylated goat anti-rabbit for another 10 minutes at RT, and finally with Peroxidase-Streptavidin conjugated and with AEC (Aminoethylcarbazole) or DAB (Diaminobenzydine) as chromogen (DAB) to develop the color reaction.
8) One of the potential advantages of high molecular weight-condensed phosphate analogues, such as sodium hexametaphosphate, is a greater inhibitory activity in preventing crystallization or stain chromogen adsorption.
Reactivity was detected using avidin-biotin technique and 3', 3'-diaminobenzidine-tetrahydrochloride dihydrate as the chromogen.
Calexcitin was immunolabeled with a primary polyclonal antibody (25U2; cloned from squid optic lobe and raised in rabbit; 1:1000 dil) (2, 3); subsequently, color was developed with a biotinylated secondary antibody, and avidin-bound microperoxidase reacted with the chromogen 3-amino-9-ethylcarbazole (AEC).
Cr(III) and Cr(VI), the cooled test solutions were analyzed for Cr(VI) and total Cr using a colorimetric method of analysis that employed a "-diphenylcarbazide chromogen.
0 Antibody Detection Chromogen method Mouse LSAB-HRP DAB anticytokeratin AE1/ AE3 Mouse antifeline MACH 4 AEC leukemia virus (gp 70) Mouse antihuman MACH 4 DAB CD 79 Mouse anti-NSE LSAB-HRP DAB Mouse anti-vimentin LSAB-HRP DAB Polyclonal rabbit MACH 4 AEC antihuman CD3 Rabbit anti-GFAP LSAB-HRP DAB Rabbit anti- LSAB-HRP DAB neurofilament Rabbit anti-S100 LSAB-HRP DAB LSAB--HRP = streptavidin biotin peroxidase (Dako); MACH 4 = Universal HRP Polymer (Biocare); AEC = 3-amino-9-ethylcarbazole (Dako); DAB = 3,3'Diaminobenzidine (Dako); NSE = neuron-specific enolase; GFAP = glial fibrillary acidic protein.
Food and drink (tea, coffee, wine) can lead to the formation of discoloration by direct precipitation of chromogen on the tooth surface.