Human Alzheimer’s disease brain: FFPWS using anti Chondroitin sulphate CS8035 Image March 5, 2023 Carl Hobbs I used anti IgM-biotinylated secondary ( anti IgG-biotin gave identical intensity of +ty but section quality was poor). I noted CS-+ve extracellular “plaques” in the white matter ( so are not Amyloid plaques)