G-quadruplex-based assay combined with aptamer and gold nanoparticles for Escherichia coli K88 determination

A colorimetric method was developed using G-quadruplex and gold nanoparticles (AuNPs) for determination of Escherichia coli K88 ( ETEC K88 ). It was composed of two modules: (1) an aptamer as biorecognizing element and (2) a capturing DNA (modified with AuNPs at 5′) as a transducer. In the absence o...

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