Figure 4

Histogram reporting the Raman signal intensity ratio between the spectral envelopes centred at 1100 cm⁻¹ and at 1630 cm⁻¹ for the analysed spinal cord sections of WT control mice and of SODG93A P75 and P90 models. The mean value and standard deviation reported for the WT control were obtained considering all the spectra recorded from the spinal cord sections of five mice. For the SOD1G93A models, each column is relative to a different specimen. Panel (a) is relative to grey matter regions in the ventral horns. Panel (b) is for white matter regions of the same spinal cord sections as in (a).