PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9435321-5 1998 In contrast, platelets exposed to high shear rate after activation by exogenous agonists such as ADP and epinephrine can aggregate when fibrinogen is the alphaIIbbeta3 adhesive ligand, yet only if vWf binding to glycoprotein Ibalpha can also occur. Epinephrine 105-116 von Willebrand factor Homo sapiens 197-200