The body fluids found outside the cells, such as plasma (the liquid portion of blood and lymph), and interstitial fluid, are generically termed extracellular fluid. Three-fourths of all extracellular fluid is stored as interstitial (between cells)...

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Extracellular fluid (ECF) usually denotes all body fluid outside of cells. The remainder is called intracellular fluid. In some animals, including mammals, the extracellular fluid can be divided into two major subcompartments, interstitial fluid and...