Bodies not in contact in a vacuum have only the radiation mechanism for heat energy transfer. An obvious example is the Earth in space, receiving heat radiation from the Sun which is partly absorbed and partly reflected, and emitting heat radiation to space.
Aspartate Aminotransferase (AST). Guide. An aspartate aminotransferase (AST) test measures the amount of this enzyme in the blood. AST is normally found in red blood cells, liver, heart, muscle tissue, pancreas, and kidneys. AST formerly was called serum glutamic oxaloacetic transaminase (SGOT).
AST (SGOT) Test. This blood test measures an enzyme called aspartate aminotransferase (AST). Enzymes are chemicals that help the cells of your body work. AST is found in red blood cells, liver cells, and muscle cells, including the heart. It is released into the blood when these cells are damaged.