Objective To investigate the improvements of 3(4,5dimethylthiazole2yl)2,5diphenyltetrazolium bromide(MTT) assay and apply the improved MTT assay to test the lymphokine activated killer (LAK) cells’ activity.Methods The study was done through the detection of the absorbance of resolvent dimethyl sulfoxide and the comparison of different culture times of the target cells.Results The best measurement degree was 510?nm and the best culture time was 4 hours.Conclusion Improved MTT assay is better than MTT assay. |