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An electrochemical method for point mutation detection based on surface ligation reaction and oligonucleotides (ODNs) modified gold nanoparticles (AuNPs) was demonstrated. Point mutation identification was achieved using Escherichia coli DNA ligase. This system for point mutation detection relied on a sandwich assay comprising capture ODN immobilized on Au electrodes, target ODN and ligation ODN....
Melting curve analysis is a powerful tool for detecting single-base mutations that may be linked to genetic diseases. Current existing methods provide insignificant melting point difference for some point mutations with the risk of wrong genotyping results, causing great limitations to their applications in clinic diagnosis. Here, we have developed an enhanced melting point difference approach to...
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