congo red


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congo red

[′käŋ·gō ′red]
(organic chemistry)
C32H22N6Na2O6S2 An azo dye, sodium diphenyldiazo-bis-α-naphthylamine sulfonate, used as a biological stain and as an acid-base indicator; it is red in alkaline solution and blue in acid solution.
References in periodicals archive ?
Keywords: Congo Red, Sunset Yellow, Anionic dyes, Lady Finger stem, Adsorption, Isotherm.
9) In these 3 subjects, MCC appeared similar to that seen in the control slide of a pharmaceutical tablet, having a rodlike structure, brightly birefringent under polarized light, and staining grey-black with Gomori methenamine silver, orange with Congo red, and dull to bright yellow with MMPS (Figures 1 through 4).
Graph 2: Screening of the isolates for biofilm formation by Tissue culture plate method, Tube method and Congo red Agar methods.
35) % for brilliant green, Congo red, crystal violent and methylene blue dyes respectively at initial dyes concentration of 1 mg/l, so adsorbent material was found to be efficient to dyes removal from SSAS and wastewater.
Congo red and Thioflavin T or S stains again are important to address the differential diagnosis, because the fibrils composing the mesangial matrix in these situations would be negative.
The results suggested that adsorption capability of Co-Ni ferrite could remove Congo red dye from aqueous solution [1].
The test isolates along with controls were inoculated onto the Congo red agar medium (Brain heart infusion broth 37 g/dL, Sucrose 50 g/dL, Agar No.
Isolate Cp3 exhibited positive Congo red, BTB test and urea, starch hydrolysis and citrate utilization.
1% Congo red (Sigma-Aldrich) for 10-15 min before de-staining with 1M NaCl solution for 15-20 min for several times or until the clear zones around the colonies were visualized.
The amorphous material showed apple-green birefringence in a polarization examination with Congo red staining [Figure 1].
The International Myeloma Working Group requires the following criteria for a diagnosis of systemic AL amyloidosis: (1) the presence of a systemic amyloid-related syndrome; (2) proof of amyloid deposition in any tissue by a Congo red stain; (3) proof that the deposits are composed of immunoglobulin light chains; and (4) evidence of a monoclonal plasma cell proliferative disorder.