The amount of water that lies between cells, often referred to as interstitial fluid, can vary depending on the type of tissue and organism being considered. In terms of overall body composition, water typically accounts for about 60% of the human body weight.
Interstitial fluid makes up a significant portion of the body's extracellular fluid (which also includes plasma), and it constitutes approximately 15% of total body weight. The actual percentage of water in the interstitial space relative to the total body water can vary but is generally in the range of 20-25%.
If you meant the percentage of water content within the cells (intracellular fluid), around 65-70% of total body water is found inside the cells, depending on factors like tissue type and hydration status.
If you have a specific context or organism in mind, please provide more details for more precise information!
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