Platelet aggregation.collagen induced:Prid:Pt:PRP:Nom
platelet aggregation.collagen induced:prid:pt:prp:nom
Platelet aggregation.collagen induced:Presence or Identity:To identify measures at a point in time:Platelet rich plasma:Nominal
platelet aggregation.collagen induced:presence or identity:to identify measures at a point in time:platelet rich plasma:nominal