An official website of the United States government
Here's how you know
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.
Crystallization of 100 mg ml−1 (open bars) or 150 mg ml−1 (shaded bars) HEWL using ammonium sulfate as a precipitant in the presence of 0.25 M amino acid at pH 4.5.