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congo red

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Congo red
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Congo red

 
Use congo red in a Sentence
–noun Chemistry.
a water-soluble powder, C32H22O6N6S2Na2, one of the Congo colors that is not acid-fast or lightfast: used chiefly as a dye, biological stain, and chemical indicator.
Origin:
1880–85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Congo red
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Congo red  
n.  A brownish-red powder, C32H22N6Na2O6S2, used in medicine and as a dye, indicator, and biological stain.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: Congo red
Pronunciation: "kä[ng]-(")gO-'red
Function: noun
: an azo dyeC32H22N6Na2O6S2 that is red in alkaline and blue in acid solution and that is used in a number of diagnostic tests and especially forthe detection of amyloidosis since the injected dye tends to be retained by abnormal amyloid deposits
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

Congo red Con·go red (kŏng'gō)
n.
An acid dye used as an indicator in testing for free hydrochloric acid in gastric contents, as a laboratory aid in the diagnosis of amyloidosis, and as a histologic stain for amyloid.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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