Abstract
A label-free magnetic surface enhanced Raman scattering (SERS) platform was constructed, which was composed of superparamagnetic Fe3O4 nanoparticles as cores for separation and Au layers as shells for label-free SERS detection. Our method could effectively distinguish exosomes from different cell sources for cancer diagnosis and showed high sensitivity and specificity within a 95% confidence interval. As a low-cost and efficient exosome analysis method, the designed integrated platform for separation and detection has promising applicability in clinical diagnostics.
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