A network of organs, vessels, and tissues, your lymphatic system, shields you from infection and maintains fluid balance. Organs of the lymphatic system are the bone marrow, thymus, and lymph nodes. Swollen lymph nodes are a sign of common infections, like strep throat, but also more serious diseases like cancer.

Your lymphatic system is a network of organs, vessels and tissues that work together to move a colorless, watery fluid (lymph) back into your circulatory system (your bloodstream).

Your lymphatic system, crucial for your immune function, defends against infection and eliminates unneeded cells. Your lymphatic system also works to keep fluid levels normal and absorb fats/vitamins into your blood.