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.
Coomassie blue-stained polyacrylamide gels containing the peak fractions of the first-step purification using Strep-Tactin Poros 50 (A, lanes 1 to 3) and second-step purification with Ni-NTA (B, lanes 5 to 7) of ISG75Strep-29-457-His. Lane 4, molecular mass markers.
