Also found in: Dictionary, Wikipedia.


Any of a group of organic salts having the general structure that on reduction (cleaving the 2,3 bond) yields a colored insoluble formazan; used as a reagent in oxidative enzyme histochemistry.
References in periodicals archive ?
Cerebral Infarct Volume Evaluation by Triphenyl Tetrazolium Chloride Staining
The respiratory burst (NBT) activity can be quantified by the Nitroblue Tetrazolium (NBT) assay, which measures the quantity of intracellular superoxide radicals produced by leukocytes (Sahu et al.
There was significant influence of sowing dates on protein content, and germination %, seed viability (%) with Tetrazolium test and seed vigour (%) with Accelerated agieng at both harvest and 30 days after harvest.
2 mL of clotted blood and 1 mL of fresh EDTA anticoagulated blood were collected for serum alpha-1 AT assay and nitroblue tetrazolium test respectively.
Next a solution of the MTT reagent--3-(4,5-dimetylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (Dia-m, Russia)--prepared using the culture medium at the final concentration of 0.
Thus, the reduction reaction of the tetrazolium salt solution occurs only in living cells and causes changes in the staining of embryo tissues, whereas dead tissues retain their original color (FRANCA NETO et al.
Tetrazolium test: Four replications of 25 seeds were soaked in water for 18 hours; then, the embryo was separated from seed coat and nutritive tissue for later immersion in 0.
Briefly, the yellow MTT tetrazolium converts to purple formazan upon removal of the bromide by diaphorase flavoprotein enzyme present in metabolically active human sperm (37--39).