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Toluidine blue stain in a vasculitic peripheral neuropathy. Toluidine blue is a basic thiazine metachromatic dye with high affinity for acidic tissue components. [2] It stains nucleic acids blue and polysaccharides purple and also increases the sharpness of histology slide images.
Therefore, toluidine blue will appear purple to red when it stains these components. The metachromatic properties of dimethylmethylene blue, a thiazine dye closely related to toluidine blue, have been exploited to assay glycosaminoglycans extracted from cartilage and other connective tissues.
Toluidine blue is an example of a partially orthochromatic dye, as it stains nucleic acids by its orthochromatic color (blue), but stains mast cell granules in its metachromatic color (red). In spectral terms, orthochromasia refers to maintaining the position of spectral peaks, while metachromasia refers to a shift in wavelength, becoming ...
Toluidine blue: Tolonium chloride Basic blue 17 52040 thiazin 92-31-9: Tropaeolin O Chrysoine resorcinol Sulpho orange Gold yellow Acid orange 6 Food yellow 8 14270 azo 547-57-9: Tropaeolin OO Fast yellow Acid orange 5: 13080 azo 554-73-4: Tropaeolin OOO2 Orange II 2-napththol orange Acid Orange 7: 15510 azo 633-96-5: Trypan blue: Niagara blue ...
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A last-minute glitch surfaced on Thursday in the details of the Gaza ceasefire-for-hostages deal and U.S. envoys are working to resolve it, a U.S. official said. Working on the issue is President ...
[5] [6] Highly anionic proteins are stained blue, proteoglycans purple and anionic proteins pink. [7] RNA is stained blueish-purple with a detection limit of 90 ng and DNA is stained blue with a detection limit of 3 ng. [8] Stains-all is light sensitive, therefore the staining is performed in the absence of light and photographed immediately.