title: Problems in separation of small numbers of platelets from unbound ligands.
mesh_terms: D001792:Blood Platelets / Q000166:cytology*; D002469:Cell Separation / Q000379:methods; D002498:Centrifugation / Q000379:methods; D002860:Chromium Radioisotopes; D006801:Humans; D007202:Indicators and Reagents; D008024:Ligands
chemical_list: D002860:Chromium Radioisotopes; D007202:Indicators and Reagents; D008024:Ligands