The MTT Cell Proliferation Assay Kit is designed for spectrophotometric quantification of cell growth, viability and proliferation and can be used as a direct indicator of cytotoxicity (such as for screening anticancer drugs) and apoptosis. The MTT Cell Proliferation Kit is a colorimetric assay for measuring the mitochondrial reductases activity in living cells. It is based on the cleavage of membrane-permeable yellow tetrazolium salt MTT to blue/purple formazan crystals by metabolically active cells. This MTT assay kit contains sufficient reagents to perform 1000 assays in 96-well plate format. Main features: *Easy and Ready to use *Accurate: The absorbance signal produced correlates with the cell number *Convenient packaging *Economical