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Effects of the original response (I) of the concentration of AuNPs@PThi (A), and effects of pH (B), incubation time (C), and incubation temperature (D) of immunoreaction on the ΔI of the recognition 100 U/mL CA19-9 using the proposed immunosensor.
Note: Error bars represent the SDs from three independent detections.
Abbreviations: AuNPs@PThi, polythionine-Au composites; CA19-9, carbohydrate antigen 19-9; SD, standard deviation.
