PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10233893-4 1999 Activation of human platelets with thrombin, a stable thromboxane A2 analog STA2, epinephrine, and serotonin resulted in an increase in MBS phosphorylation, and the agonist-induced MBS phosphorylation was prevented by pretreatment with the respective receptor antagonist. Epinephrine 82-93 coagulation factor II, thrombin Homo sapiens 35-43