Trypan Blue

Use of trypan blue to evaluate cell viability under a microscope is one of the basic lab technique in cell culture to check for good cell growth and to control cell concentration for subsequent experiments.

Ricardo, R., Phelan, K. Counting and Determining the Viability of Cultured Cells. J. Vis. Exp. (16), e752, DOI: 10.3791/752 (2008).