Sphere of influence. In the field of international relations, a sphere of influence (SOI) is a spatial region or concept division over which a state or organization has a level of cultural, economic, military, or political exclusivity, accommodating to the interests of powers outside the borders of the state that controls it.
Multiple myeloma is named for the clock face appearance of these cancer cells when seen under a microscope. They infiltrate virtually all of a patient's bone marrow. In x-ray images of multiple myeloma, it looks like holes have been punched out of the bone.
Multiple myeloma: A blood cancer in which a white blood cell called a plasma cell becomes malignant. The plasma cells multiply and release damaging substances that eventually cause organ damage. Multiple myeloma has no cure, but stem cell transplant and/or chemotherapy can allow many people to live for years with the condition.