Figure 3From: Reproducible and label-free biosensor for the selective extraction and rapid detection of proteins in biological fluidsSERS spectra of a I pAu/AuNS/rHuEPO (drop dry), II pAu/AuNS/Apt (self-assembled monolayer) and III pAu/AuNS/Apt/rHuEPO (selectively captured). b SERS spectra of pAu/AuNS/Apt incubated in I blank horse plasma and II rHuEPO spiked horse plasma. Each spectrum is the average of 10 spectra.Back to article page