Fig. 5From: Au–Ag assembled on silica nanoprobes for visual semiquantitative detection of prostate-specific antigena Test of reproducibility using SiO2@Au–Ag NPs as a signal reporter with clinical samples (0.53 ng/mL PSA) in LFIA. (i) Color images and (ii) measurement of signal in-tensity. b Test of stability using SiO2@Au–Ag NPs with clinical sample (0.56 ng/mL PSA) in LFIA. (i) Color image and (ii) measurement of signal intensity. Error bars represent standard deviations of the means for three batches of analyte measurementsBack to article page