Von Willebrand factor
...that the Von Willebrand factor is a blood protein used by the coagulation function of the circulatory system?
...that the <b id="mwRg"><a href="./Von_Willebrand_factor" id="mwRw" rel="mw:WikiLink" title="Von Willebrand factor">Von Willebrand factor</a></b> is a <a href="./Blood" id="mwSA" rel="mw:WikiLink" title="Blood">blood</a> <a href="./Protein" id="mwSQ" rel="mw:WikiLink" title="Protein">protein</a> used by the <a href="./Coagulation" id="mwSg" rel="mw:WikiLink" title="Coagulation">coagulation</a> function of the <a href="./Circulatory_system" id="mwSw" rel="mw:WikiLink" title="Circulatory system">circulatory system</a>?