Figure 5: In vitro SERS mapping results following 3 hour treatment with NS1 (A, B) and NS2 (C, D) on SCC9 cells. Figure 5 shows brightfield images (A, D) and corresponding cell SERS images (B, C) created using the sum filter from the 1214- 1260 cm-1 peaks of the attached Raman reporter, DTTCi, at 785 nm laser excitation.