“…From other sensors utilized in determination of biologically active low molecular compounds, DNA-based assay is considered as one of most promising due to high variety of the species detected, higher stability of DNA oligonucleotides and aptamers against proteins, and simpler detection mode [ 9 , 10 ]. In particular, DNA-based sensors have been described for sensitive determination of antitumor drugs [ 11 , 12 , 13 , 14 ], reactive oxygen species [ 15 ], and antioxidants [ 16 , 17 , 18 ]. Aptamer-based biosensors detect with very high sensitivity mycotoxins, drugs, and cancer biomarkers [ 19 , 20 , 21 , 22 , 23 , 24 , 25 ].…”