The FastCounting cell counting kit provides a sensitive and convenient method to determine cell viability in cell proliferation and cytotoxicity assays. The kit uses a water-soluble tetrazolium salt, WST-8 (i.e. 2-(2-methoxy-4-nitrophenyl)-3-(4-nitrophenyl)-5-(2,4-disulfophenyl)-2H-tetrazolium,…