title: Density gradients prepared from colloidal silical particles coated by polyvinylpyrrolidone (Percoll). II. Radioactive labeling of Percoll.
mesh_terms: D002499:Centrifugation, Density Gradient / Q000379:methods*; D003102:Colloids; D007457:Iodine Radioisotopes; D007553:Isotope Labeling; D011205:Povidone; D012822:Silicon Dioxide
chemical_list: D003102:Colloids; D007457:Iodine Radioisotopes; D012822:Silicon Dioxide; D011205:Povidone