Simplifying the traditional tetrazolium MTT assay, Promega developed its CellTiter 96 AQueous One Solution Cell Proliferation Assay that uses an MTS reagent instead of MTT.

For example, during the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) tetrazolium reduction (MTT) cell proliferation assay water insoluble tetrazolium crystals are produced by the ...