Fig. 2From: Label-free vibrational imaging of different Aβ plaque types in Alzheimer’s disease reveals sequential events in plaque developmentImmunohistochemical and FTIR imaging of control tissue (1) diffuse (2), compact (3) and classic cored plaques (4). A Immunohistochemical staining against amyloid beta (Aβ). B Ratio between the Amide II and CH stretching bands. Red indicates high protein concentrations. C Ration between the main β-sheet band and non-β-sheet band of the Amide I. Red indicates high β-sheet levelsBack to article page