Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
AFM images of Aβ in (A) 0.4 M urea, fourfold diluted; (B) 0.4 M urea, 10-fold diluted; (C) 2 M urea, fourfold diluted; (D) 2 M urea, undiluted; (E) 4 M urea, fourfold diluted; and (F) 6 M urea, fourfold diluted. Aβ in each urea concentration was incubated for 20–22 h before taking AFM images in solution tapping mode. Samples were diluted as indicated just before imaging. Scale bar represents 100 nm.
