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(A) Normalized SERRS intensity through layers of chicken skin. Error bars are in the black dot. (inset) Background subtracted SERRS spectra through 0 (blue), 1 (red), 2 (black) layers of chicken skin. (B) Quantitative ex vivo SERRS multiplexing of 4 SERRS probes (blue: IR-780, red: IR-792, green: IR-797, purple: IR-813). An error of 30.2±3.0 % was observed. Data was collected under 785 nm excitation (400 mW, 10 sec, 1 accumulation).
