The organs are the tonsil, thymus, lymph nodes, spleen, and lymphatic vessels.
The spleen has the splenic pulp, lymphatic follicle, and splenic capsule and works to fight infections and it removes unwanted material as well.
The Circulatory System works closely with the Immune System for transportation needs.
The Integumentary System works closely with this system because it is the Immune System's first defense mechanism for fighting off things.
An allergy is a reaction to a harmless or common substance by the body's Immune System.
Autoimmune disease is a disease in which the immune system attacks the organism's own cells.
Cancer is a disease in which the cells begin dividing at an uncontrolled rate and become invasive.
