the actors of the immune system

• the actors of the immune system are cells organs and molecules
• the cells of the immune system are the white blood cells( leukocytes)
• there are 3 types of white blood cells: monocyte granulocyte lymphocyte
• molecules of the immune system : anti-bodies
• organs of the immune system : site of production, maturation and cooperation of leukocytes
• primary organs: site of production and maturation
• secondary organs: cooperation and site of storage, reaction against intruders
• secondary organs: sleep lymph nodes
• primary organs : bone marrow thymus