Pharmaceutical Holdings Limited (Hong Kong China). Unfractionated
Heparin was acquired from SAGENT Pharmaceuticals (IL, USA). DyLight
488 anti-GPIbβ was obtained from Emfret Analytics (Eibelstadt,
Germany). Anti-mouse fibrin antibody was a kind gift from Dr. R.
Camire (Children’s Hospital of Philadelphia) and was fluorescently
labeled using an Alexa Flour 647 antibody labeling kit (Thermo
Fisher).