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.
Antithrombin's inactivation of factor IIa is accelerated in the presence of unfractionated heparin molecules. Large oligosaccharide chains (>18) are required to bind AT and factor IIa simultaneously. The high-affinity pentasaccharide sequence is represented by the hexagonal figures
