Fig. 4

Tau-positive oligodendroglia-like cells and threads in the globus pallidus. In the globus pallidus of the 36 yo monkey, small oligodendroglia-like cells (arrowheads) and threads (asterisks) were positive with AT8 a. Argyrophilia with Gallyas silver impregnation was also observed b. Adjacent slices were positive with RD4 c but negative with RD3 d. Extended focus imaging (a–d, see legend of Fig. 1), Scale bar, 20 μm