The Immune System

Even though the skin and mucous membrane barriers and the inflammatory response are very effective, they cant protect against all pathogens.So your immune system gets ready for action. the imune sysytem is made up of certain types of blood cells and proteins called anitbodies. The blood cells and antibodies travel through the blood vessels and reside within your organs.
These infection fighting cells also move through the lymphatic system, which is a network of vessel...