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.
Serial extraction of water-soluble, detergent-soluble and formic acid-soluble Aβ. Human brain tissue was homogenized in 5 vol Tris-buffered saline (TBS), centrifuged at 91 000g for 78 min and the supernatant designated as the TBS extract. The pellet was re-homogenized in 5 vol of Tris-buffered saline containing 1% TX-100 (TBS-TX), centrifuged and the supernatant removed (TBS-TX extract). The remaining pellet was then extracted in 88% formic acid (FA extract).
