title: Letter: Particle size of radioisotope colloids.
mesh_terms: D003102:Colloids; D006048:Gold Colloid, Radioactive; D006801:Humans; D010316:Particle Size; D015021:Yttrium Radioisotopes
chemical_list: D003102:Colloids; D006048:Gold Colloid, Radioactive; D015021:Yttrium Radioisotopes