title: Method and apparatus for producing and collecting a multiplicity of density gradients.
mesh_terms: D002469:Cell Separation; D002499:Centrifugation, Density Gradient / Q000295:instrumentation* / Q000379:methods; D004912:Erythrocytes; D006454:Hemoglobins / Q000032:analysis; D006801:Humans
chemical_list: D006454:Hemoglobins