title: A physical explanation for multiple-cell classes after centrifugation in colloidal silica gradients.
mesh_terms: D002469:Cell Separation / Q000379:methods*; D002500:Centrifugation, Isopycnic; D003102:Colloids; D004023:Dictyostelium; D004912:Erythrocytes; D012822:Silicon Dioxide
chemical_list: D003102:Colloids; D012822:Silicon Dioxide