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) is primarily found in the muscles, liver, and heart. As such, these enzymes will be within the normal range on a blood test. However, if there is any injury or damage to your muscles, liver, or heart, these enzymes spill into the bloodstream and will be reflected in the blood report as being elevated.