"Microsphere"^^ . . "C0026032"^^ . "A very tiny, hollow, round particle made from glass, ceramic, plastic, or other materials. Microspheres injected into blood vessels that feed a tumor may kill the tumor by blocking its blood supply. They can also be filled with a substance that may help kill more tumor cells.NCI-GLOSS" . "MicrospherePTNCI" . "Manufactured Object"^^ . "microspherePTNCI-GLOSSCDR0000559140" . . . "C94188"^^ . "Microsphere"^^ .