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. 2019 Mar 5;9(3):366. doi: 10.3390/nano9030366

Figure 5.

Figure 5

SEM images of SERS platforms after filtration of (a) HeLa cells, (b) prostate cancer PC3 cells, and (c) leucocyte cells. White blood cells were not captured on the polymer based SERS-active platform due to their size, which was smaller than the diameter of pores.