Figure 3
From: Electrospun nerve guide conduits have the potential to bridge peripheral nerve injuries in vivo

Cross sections from the PCL nerve guide study. Sections were stained for neurofilaments (NF), cell nuclei (Hoechst 33342), macrophages (ED1), and Schwann cells (S-100). It was technically impossible to match all images. Immunofluorescence microscopy rendered a faint background, which is due to light scattering in the fiber matrix and not due to autofluorescence. Newly formed axons were observed in some of the channels (D,E) but the majority of neurofilaments were found in the space between the fiber mat layers (D).