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(A) Selectivity of the proposed sensing strategy. The final concentrations of BSA, IgG, thrombin, β-hCG and hCG were 10 ng/mL, 10 ng/mL, 10 ng/mL, 25 ng/mL and 10 IU/mL, respectively; (B) Fluorescence spectra of FITC-PPLRINRHILTR/GO for the detection of hCG in urine samples.
