A Sensitive Fluorescent Immunoassay for Prostate Specific Antigen Detection Based on Signal Amplify Strategy of Horseradish Peroxidase and Silicon Dioxide Nanospheres

<div>(a) UV-vis absorption of (A) HRP-Ab2, (B) SiO2 NSs, and (C) HRP-Ab2-SiO2 NSs. (b) Ninhydrin color reaction of (A) HRP-Ab2, (B) HRP, (C) HRP-Ab2-SiO2 NSs, (D) COOH-SiO2 NSs, (E) NH2-SiO2 NSs, and (F) SiO2 NSs. (c) EIS spectra of (A) bare GCE, (B) SiO2 NSs/GCE, and (C) HRP-Ab2-SiO2 NSs/GCE.</div>

Journal of Analytical Methods in Chemistry

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Figure 3

Figure 3: A Sensitive Fluorescent Immunoassay for Prostate Specific Antigen Detection Based on Signal Amplify Strategy of Horseradish Peroxidase and Silicon Dioxide Nanospheres 

Figure 3 | A Sensitive Fluorescent Immunoassay for Prostate Specific Antigen Detection Based on Signal Amplify Strategy of Horseradish Peroxidase and Silicon Dioxide Nanospheres 