dye

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dye

 [di]
any of various colored substances containing auxochromes and thus capable of coloring substances to which they are applied; used for staining and coloring, as test reagents, and as therapeutic agents.

dye

(),
A stain or coloring matter; a compound consisting of chromophore and auxochrome groups attached to one or more benzene rings, its color being due to the chromophore and its dyeing affinities to the auxochrome. Dyes are used for intravital coloration of cells, staining tissues and microorganisms, as antiseptics and germicides, and some as stimulants of epithelial growth. For individual dyes, see the specific names. Commonly but improperly used for radiographic contrast medium.
[A.S. deah, deag]

dye

(di) any colored substance containing auxochromes and thus capable of coloring substances to which it is applied; used for staining and coloring, as a test reagent, and as a therapeutic agent.
acid dye , acidic dye one which is acidic in reaction and usually unites with positively charged ions of the material acted upon.
amphoteric dye  one containing both reactive basic and reactive acidic groups, and staining both acidic and basic elements.
anionic dye  acid d.
basic dye  one which is basic in reaction and unites with negatively charged ions of the material acted upon.
cationic dye  basic d.

dye

[dī]
Etymology: AS, deag
1 v, to apply coloring to a substance.
2 n, a chemical compound capable of imparting color to a substance to which it is applied. Various dyes are used in medicine as stains for tissues, test reagents, therapeutic agents, and coloring agents in pharmaceutic preparations.

dye

()
A stain or coloring matter; a compound consisting of chromophore and auxochrome groups attached to one or more benzene rings, its color being due to the chromophore and its dyeing affinities to the auxochrome. Dyes are used for intravital coloration of living cells, staining tissues and microorganisms, as antiseptics and germicides, and some as stimulants of epithelial growth. Commonly used term for radiographic contrast medium.
[A.S. deah, deag]

dye

()
A stain or coloring matter. Commonly but improperly used to mean radiographic contrast medium.
[A.S. deah, deag]

dye

any of various colored substances containing auxochromes and thus capable of coloring substances to which they are applied; used for staining and coloring, as test reagents, and as therapeutic agents.

acridine dye
acriflavine and proflavine are antiseptic dyes.
azo dye
dyes like scarlet red and phenazopyridine are used as antiseptics to be applied topically or as urinary antiseptics.
diagnostic dye
several diagnostic test procedures involve the administration of a dye and determination of the rate of excretion, either by measuring levels remaining in the body or amounts excreted in the urine, feces, etc. Examples are the bromsulfthalein (BSP) test for liver function, and the phenolsulfonphthalein (PSP) renal function test.
dye dilution method
the standard method of measuring circulating plasma volume; based on the degree of dilution of a physiologically inert dye injected intravenously.
vital dye
see vital stain.

Patient discussion about dye

Q. Has anyone had an allergic reaction to gadolinium dye, MRI contrast agents, I have had a severe reaction. I would like to know the long term effects of this dye. And if anyone else has had or heard of problems and reactions to it. Please answer me. Thank you

A. In 1969 I almost died from the IVP dye. I had no idea I was allergic and when I awoke I was in a "recovery room." The doctor told me to always tell any physicians/paramedics etc of my allergy status regarding the dye. I now have chronic back pain, have a history of cancer in the family and the doctor wants to do a scan (including dye) but when I emphasized that I was allergic he backed off. Now I am wondering if there is anything else that can be done to test the bone (scan) without the dye. Any answers? Thanks

More discussions about dye
References in periodicals archive ?
Van Stralen, Trudy, Indigo, Madder and Marigold: A Portfolio of Colors from Natural Dyes, Interweave Press, Loveland, Colorado, 1993.
This resulted in an increase of dye permeating into the log, so that the dye uptake demonstrably increased and the color grew darker than a nondyed log.
Dogs must have its whole body covered in dye unlike humans who dye their heads.
The main objective of the LIFE SEACOLORS project is to demonstrate and validate a new process for obtaining natural dyes from a sustainable and renewable source algae.
European trade further stimulated an interest in natural dyes, so that along with textiles there was active competition for these, particularly for indigo.
Sterile PBW are marked by an oil-soluble internal red dye that is incorporated into the larval diet (Graham & Mangum 1971), and in the great majority of cases it clearly labels diet-reared moths.
Fixed bed column of continuous mode experiments were conducted in order to test four types of dyes removal by treated SSAS of above dyes each one alone at desired concentration with the various bed heights of the adsorbent media RH using different flow rates of SSAS of four types of dyes at vsarious pH.
Those with positive PPD-allergy patch test results or those looking to simply avoid the chemical can turn to an emerging market of safer, alternative hair dyes and chemically conscious salons that color without PPD and other irritants like resorcinol and ammonia.
Other studies suggest some people, because of certain genes, may be more at risk of developing lymphomas (30% more) if they use hair dye -- especially darker, heavier dyes.
While it might be impossible to prevent your children from eating anything with artificial dye, you can do your part by shopping at Whole Foods or Trader Joe's--both chains have banned products that use artificial dyes and carry all-natural food coloring for home cooking and baking projects.
The decolorization efficiency of each algal isolate was studied in nitrogen free BG-11 medium supplemented separately with textile dyes (Orange 3R, Blue 3R, Yellow GR, Black RL and T.
It said was "not in the position to finally assess the risk of reactions products of oxidative hair dyes due to the incomplete dossier".