The immune system is the organ system that protects the body against invaders by recognizing and attacking specific types of pathogens and cancer cells. The Lymphatic system is the organ system through which lymph circulates; includes lymph vessels, lymph nodes and the spleen. The lymphatic system helps remove toxins and pathogens from the blood and interstitial fluid. It also returns fluids and solutes from the interstitial fluid into the blood stream. Interstitial fluid is the fluid that occupies the space between cells.

Your body has non-specific defenses that are the first defense mechanism against any incoming virus or bacteria. The first one is the skin which has a hard outer layer and is almost impermeable to incoming bacteria. Your skin also has glands that release acid onto your skin to stop microorganisms from growing in it. Among other things there are also tears, sweat, and saliva which have...