title: Platelet count ratio (PCR) as an additional parameter in the quantitation of platelet aggregation in vitro.
mesh_terms: D000244:Adenosine Diphosphate / Q000494:pharmacology; D003094:Collagen / Q000494:pharmacology; D003720:Densitometry; D006801:Humans; D008027:Light; D010974:Platelet Aggregation / Q000187:drug effects; D010976:Platelet Count / Q000379:methods*; D012310:Ristocetin / Q000494:pharmacology; D012542:Scattering, Radiation
chemical_list: D012310:Ristocetin; D000244:Adenosine Diphosphate; D003094:Collagen