Fig. 4
From: Global alterations to the choroid plexus blood-CSF barrier in amyotrophic lateral sclerosis
a and b Immunohistochemistry for vWF was performed on n = 5 controls and n = 7 ALS cases. Pictures were taken under low magnification to show the spread of positive staining throughout the tissue a and at 40x magnification b to show localization in the stroma (red arrowheads), underneath the basal side of the choroid plexus epithelial layer (black arrows), and within CP cells (blue arrows). White arrowheads point to staining within endothelial cells, while black arrowheads point to interstitial staining in some controls. Scale bar: 20 μm