*5.2. Antibodies*

Anti-ABCB1 monoclonal C219 antibodies were obtained from Novus Biologicals and Abcam (Cambridge, MA, USA). Anti-LRP-1 antibody was obtained from Calbiochem-Novabiochem (La Jolla, CA, USA). Anti-β-actin antibody was purchased from Abcam. Antiα-tubulin monoclonal antibody, and secondary HRP-conjugated anti-mouse and anti-rabbit antibodies were purchased from Sigma-Aldrich. For the in-house Aβ<sup>40</sup> ELISA, capture and detection antibodies were anti-Aβ1-40 (polyclonal rabbit; catalog no. ABN240 from Merck Millipore) and anti-Aβ1-16 (monoclonal mouse; clone AB10 from Sigma-Aldrich), respectively. For the in-house Aβ<sup>42</sup> ELISA, capture and detection antibodies were anti-Aβ1-16 and anti-Aβ37-42 (polyclonal rabbit; catalog no. Ab34376 from Abcam), respectively.
