The lymphatic system helps the body balance fluids, fight infection, and absorb nutrients. Learn more about it here. Lymph is the fluid which travels throughout the lymphatic system in animals. It is different from blood, in that it comes from the extracellular fluids surrounding cells. Lymph is a colourless fluid that circulates throughout the lymphatic system and filters microbes, toxins and debris. Learn about the components of lymph , how it is formed from interstitial fluid and its functions in humans. Lymph is the fluid that circulates throughout the lymphatic system. It is formed when the interstitial fluid is collected through lymph capillaries. It is then transported through larger lymphatic vessels to lymph nodes, where it is cleaned by lymphocytes before emptying ultimately into the right or left subclavian vein, where it mixes back with the blood. An important function of lymph is that it captures the bacteria and bring them to lymph nodes, where they are destroyed. It also helps in ...