Figure 2
Comparison of different signal amplification methods.
(A) Direct assay for AFP. (B) Detection with signal amplification using AuNP@Ab1 conjugates. (C) Detection with dual signal amplification using AuNP@Ab1 and Ab2@QD conjugates. The concentration of the AFP and anti-AFP2 was 100 ng/mL and 0.1 mg/mL, respectively.
