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Specificity of the electrochemical immunosensor toward 5 ng/mL common proteins and digestive enzymes (5 U/mLfor CA125 and CA19-9).
Note: Error bars represent the SDs from three independent detections.
Abbreviations: CA19-9, carbohydrate antigen 19-9; BSA, bovine serum albumin; SD, standard deviation; AFP, alpha fetoprotein; CEA, carcinoembryonic antigen.
