Proximal sections showing an example of the NFP+
labelling patterns in peripheral nerve fascicle identified in ketamine cystitis tissue and observed in nearly all ketamine cystitis samples. EMA showed a perineural labelling pattern. The prominent perineural spindle cell cuff was also NGFR+ and exhibited scanty SMA+ restricted to occasional cells. Note, the adjacent blood vessel, which showed SMA labelling of the mural smooth muscle cells, but unlike the nerve fascicle was NFP-, NGFR- and S100-. Scale bar represents 100 μm.