Fig. 2From: The recent advancements in the early detection of cancer biomarkers by DNAzyme-assisted aptasensorsa A detection technique for CEA identification based on a DNAzyme dual-aptasensor; b An ECL-based detection of CEA using the GQDs-IL-NF nanocomposite and DNAzyme. Reproduced with permission from [43] and [44]Back to article page