Amyloid Beta Is Internalized via Macropinocytosis, an HSPG- and Lipid Raft-Dependent and Rac1-Mediated Process. Alzforum, 07 Oct 2022 Nazere K, Takahashi T, Hara N, Muguruma K, Nakamori M, Yamazaki Y, Morino H, Maruyama H.