👉 In mathematics, the term "interstitial fluid" refers to any fluid that exists between two solid surfaces. Interstitial fluids are important in many biological and chemical processes, as they can influence the flow of substances through cells and tissues. They also play a role in the transport of nutrients and waste products across cell membranes and other structures within cells. Interstitial fluids are typically characterized by their low density, which makes them difficult to visualize or measure. The term "interstitial fluid" is often used interchange
