Fig. 6

Microscopic pictures showing decreased dura mater thickness in the control group (A), Laminectomy group (B), PRF treated group (C), Chi/Ag-NPs group (D), and combined PRF and Chi/Ag-NPs treatment group (E). MT, X: 400 bar 50 μm Pia mater (dashed black arrow); Dura mater (thin black arrow)