Twenty - two sections of paraffin - embedded tissue were stained for Luxol fast blue, hematoxylin and eosin, Bielschowsky silver, phosphorylated tau (ptau)(AT8), α - synuclein, amyloid - β, and phosphorylated transactive response DNA binding protein 43 kDa (pTDP - 43) using methods described previously.16 In some cases, large coronal slabs of the cerebral hemispheres were also cut at 50 μm on
a sledge microtome and stained as free - floating sections using AT8 or CP - 13.16,17