Fig. 6

Representative sections of choroid plexus tissue plug extracted from a ventricular catheter (VC). Sections ‘a’ through ‘e’ are from the plug in the lumen whereas ‘d’ through ‘f’ are from the pedicles attached to the plug. a Population of T lymphocytes (stain for CD3; magnification, × 100; scale bar, 500 µm) (b) Populations of activated macrophages and microglia (stain for HLA-DR; magnification, × 100; scale bar, 500 µm) (c) Fibrosis (stain for collagen (pink); magnification, × 100; scale bar, 500 µm) (d) Activated microglia and macrophages (Iba-1 stain; magnification, × 400; scale bar, 50 µm) (e) Proliferating inflammatory cells (Ki67 stain; magnification, × 200; scale bar, 200 µm) (f) Cytoskeleton of choroid plexus epithelium (CK stain; magnification, × 40; scale bar, 1000 µm)