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.
The Myelin Sheath. The soma is the cell body of a neuron. The nerve cells in your body have a protrusion extending out of the soma that we call an axon. If your smartphone is the soma, then the axon sort of looks like the cord coming out of the smartphone.