Tetrazolium compounds are an increasingly popular, non-radioactive alternative for cellular proliferation and cytotoxicity assays. Promega's CellTiter 96® AQueous One Solution Assay features the tetrazolium compound MTS, a more stable and soluble version of previous tetrazolium compounds. MTS can be directly substituted for a radioisotope in assays to determine cellular proliferation or death.
Promega Notes 59, 50.
Terry Riss and Rich Moravec