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The increasing applications of quantum dots (QDs) as optic tools in life science have stimulated researchers to evaluate the effects of these nanoprobes in cell viability using a variety of methods, especially colorimetric ones. One of the most applied tests is the MTT assay. In comparison to MTT, for example, the resazurin-based method has the main advantage of not evaluating the cells directly, thus eliminating false-positive results that may arise from the overlap of the absorbances of the QD with the colorimetric compound. Therefore, herein, we describe the resazurin assay as an alternative, simple, quick, sensitivity, reproducible, and nontoxic test to evaluate the in vitro cell viability after QD exposure. Moreover, this test presents an additional advantage; the cells remain viable for complementary experimental procedures, such as cell migration or adhesion.


Maria Isabela A Pereira, Camila Aparecida P Monteiro, Weslley Felix de Oliveira, Beate S Santos, Adriana Fontes, Paulo E Cabral Filho. Resazurin-Based Assay to Evaluate Cell Viability After Quantum Dot Interaction. Methods in molecular biology (Clifton, N.J.). 2020;2135:213-221

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PMID: 32246337

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