Editing Assay (section)

===Cell counting, viability, proliferation or cytotoxicity assays===
A cell-counting assay may determine the number of living cells, the number of dead cells, or the ratio of one cell type to another, such as enumerating and typing [[red blood cell|red]] versus different types of [[white blood cell|white]] blood cells. This is measured by different physical methods (light transmission, electric current change). But other methods use biochemical probing cell structure or physiology (stains). Another application is to monitor [[cell culture]] ([[Cell culture assays|assays]] of cell proliferation or [[Cytotoxicity#Measuring cytotoxicity|cytotoxicity]]).
A cytotoxicity assay measures how toxic a chemical compound is to cells.
*[[MTT assay]]
*Cell Counting Kit-8 (WST-8 based cell viability assay)
*SRB ([[Sulforhodamine B]]) assay
*CellTiter-Glo® Luminescent Cell Viability Assay 
*Cell counting instruments and methods: [[CASY cell counting technology]], [[Coulter counter]], [[Electric cell-substrate impedance sensing]]
*Cell [[viability assay]]s: [[Resazurin#Cell viability applications|resazurin method]], [[ATP test]], [[Ethidium homodimer assay]] (detect dead or dying cells), [[Bacteriological water analysis]], [[Clonogenic assay]]s, ...