In contrast
to ‘‘normal’’ Raman spectra of living cells, where strong
Raman bands appear around 1450 cm21 (protein CH deformation
vibration) and at 1650 cm21 (amide I), in the
SERS spectra of living cells these bands seem to exhibit
almost no enhancement. In a few spectra, a very weak
SERS band appears at about 1450 cm 21