Fig. 4From: Nanostructured surfaces for analysis of anticancer drug and cell diagnosis based on electrochemical and SERS tools(Reprinted with permission from [40]. Copyright @ 2012 Elsevier)Schematics for the detection of cytotoxicity of thioglycolic acid (TA) or cysteamine (CA)-capped green and red quantum dots (QDs) based on cell chip and conventional MTT assay. ‘R’, ‘W’, and ‘C’ mean the reference, working, and counter electrodes, respectivelyBack to article page