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X4626 Sigma

XTT sodium salt

powder, BioReagent, suitable for cell culture

Synonym: 2,3-Bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide inner salt

Description

Application

XTT has been used in conjunction with phenazine methosulfate (PMS) to screen human cancer cell lines.1 The tetrazolium dye has also been used to study fungal cell damage,2 in testing antimicrobial susceptibility of staphylococci,3 and in Candida biofilm research.4 Limitations to the XTT assay have been reported.5

Principle

In living cells, XTT is metabolically reduced to produce a colorimetric, water-soluble formazan product.

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