title: Use of heparin in the collection of bone-marrow aspirates for cytogenetic studies.
mesh_terms: D001854:Bone Marrow Cells; D006493:Heparin / Q000494:pharmacology*; D006801:Humans; D008677:Metaphase; D013048:Specimen Handling / Q000379:methods*
chemical_list: D006493:Heparin