Figure 3.

(A) Bright-field image of a ferning dentrite and relative Raman images obtained selecting the lipids band area (B) 2800–2900 cm${}^{-1}$, (C) the proteins band 2900–3000 cm${}^{-1}$ and (D) water band from 3100 to 3700 cm${}^{-1}$. The scale bar is 1 $\mathsf{\mu }$m.