Medical scientists want to find better ways to treat neuroblastoma and to find ways to
prevent the tumor from growing back. To do this, they need more information about the
characteristics of neuroblastoma cells. Therefore, they want to study samples of
neuroblastoma tissues and neuroblastoma and normal cells in the blood and bone marrow that
may be related to the growth of neuroblastoma cells. Doctors and other medical scientists
also want to find better ways to detect and measure neuroblastoma to improve the ability to
follow the response of tumor cells to therapy.