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(A) Schematic representation of fabrication and sensing of aptasensor, fluorescence spectra of blend CDs/apt1 and QDs/apt2; (B) before bioconjugation; (C) after bioconjugation; (D) incubation with 20 mg/mL of toxins aflatoxin-B1 and ochratoxin A, reproduced with permission from [72] (Jing Qian et al., 2020).
