Figure 4. Aβ monomer is the predominant size form of Aβ from human AD brain in the top layer after 475,000× g ultracentrifugation.
(A) SEC total protein profile from 1 mL of the top 5 mL supernatant layer removed following ultracentrifugation at 475,000× g. (B) Aβ1−x assay on the same supernatant SEC fractions.