Definition of "tetrazolium" [tetrazolium]

• A univalent cation derived from a tetrazole (noun)

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• "You can’t tell the difference until you take a sample of the bacteria and ‘plate them out’ on an agar plate that contains a nutritious broth plus the sugar arabinose and a chemical dye called tetrazolium."
• "The retinas were postfixed for 30 minutes in the same fixative, washed and incubated in a solution containing 0. 02% NADPH-diaphorase and 0. 04% nitroblue tetrazolium"
• "Sections were incubated overnight at 70°C with 1 µg/ml of the digoxigenin-labeled probes, and binding detected by overnight incubation with alkaline phosphatase-conjugated anti-digoxigenin antibody (1: 3500, Roche), which was visualised with NBT (Nitro blue tetrazolium chloride)/BCIP (5-Bromo-4-chloro-3-indolyl phosphate, toluidine salt; 1: 50, Roche) or Fast Red (Roche) for fluorescence."