The extent of MTT reduction to formazan within cells was calculated by measuring the absorbance at 570 nm, by using a microplate ELISA reader (Spectra Max Plus, Molecular Devices, CA, USA).
The extent of MTT reduction toformazan within cells was calculated by measuring theabsorbance at 570 nm, by using a microplate ELISA reader(Spectra Max Plus, Molecular Devices, CA, USA).