Description
The immune system is a complex network of organs, tissues, and cells that work together to defend the body against infectious agents and other threats. The primary organs of the immune system are the bone marrow and thymus, which produce and mature immune cells called lymphocytes. The bone marrow is the birthplace of all blood cells, including white blood cells, while the thymus is responsible for the development and maturation of T-cells. The secondary lymphoid organs, such as the lymph nodes, spleen, and mucosa-associated lymphoid tissues (like the tonsils and Peyer’s patches), serve as strategic locations where immune cells can encounter and respond to pathogens.