SEARCH Articles Figures Tables Chemical Probing in Cells by Intrinsic SERS Spectra Cytochrome SERS spectra Frequency dependence SERS spectra SERS SERS spectra SERS spectra SERS spectra advantages SERS spectra and silver electrodes SERS spectra electrodes SERS spectra of deoxyribonucleotides SERS spectra silver electrodes Ser Surface enhanced Raman spectra SERS) Surfaces surface enhanced Raman spectra (SERS