Fig. 1. Aβ and tau pathology in the superior temporal gyrus of the PIB-refractory Alzheimer’s case AD1.
(a) Antibody 6E10-immunoreactive senile plaques (two denoted by arrows) and large-vessel CAA (black arrowhead). (b) Antibody CP13-immunoreactive, intra-somatal neurofibrillary tangles (two denoted by arrowheads) and abundant neuropil threads. (c) Ultrastructure of amyloid fibrils in the periphery of a senile plaque. (d) Ultrastructure of a bundle of paired helical filaments (marked by two arrowheads). Case AD1 had significant CAA, and the senile plaques sometimes showed diminished immunostaining in the central region (right-hand arrow in a), but otherwise the histopathology did not differ remarkably from that of the other AD cases. Bar = 100μm in a and b and 200nm in c and d).