An official definition of indigenous has not been adopted by the UN system due to the diversity of the worldâs indigenous peoples. Instead, a modern and inclusive understanding of indigenous has been developed and includes peoples who:
Thymus. The thymus gland is the main organ of the lymphatic system. Located in the upper chest region, the primary function of this gland is to promote the development of specific cells of the immune system called T lymphocytes.nce mature, these cells leave the thymus and are transported via blood vessels to the lymph nodes and spleen. T lymphocytes are responsible for cell mediated immunity, which is an immune response that involves the activation of certain immune cells to fight infection.
1 The spleen is the largest organ of the lymphatic system. 2  Its primary function is to filter blood of damaged cells, cellular debris, and pathogens. 3  Like the thymus, the spleen houses and aids in the maturation of lymphocytes. 4  Lymphocytes destroy pathogens and dead cells in the blood. Thymus. 2  The thymus gland is the main organ of the lymphatic system. 3  Its primary function is to promote the development of specific cells of the immune system called T-lymphocytes. 4  Once mature, these cells leave the thymus and are transported via blood vessels to the lymph nodes and spleen.