Figure 6.

Emission intensity (solid lines) and background (broken lines) as functions of excitation intensity for the Stokes (red) and the anti-Stokes (blue) emissions. These data were obtained on two different particles for the unstained cells (right) and stained cells (left). For the unstained cells, the plasmon was chosen close to the laser line, to avoid favoring one or the other emission by the resonance effect. (Arrows) Maximal signal/background of each emission in the figure conditions. To see this figure in color, go online.