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(A) NFTs of tau from AD brain section immunogold labelled with anti‐tau antibody T22 and total tau as labelled in the images. (B) PHFs formed in vitro from dGAE. Apparent diameter (mean ± SE) for narrow (Red arrow) and wide (Green arrow) sections of the filaments was 9.47 ± 0.86 nm and 17.42 ± 0.72 nm, respectively. The crossover repeat distance (blue bracket) for all filaments was 72.50 ± 0.94 nm.
