Immune cells are found in various locations in the body:
- Blood: Many immune cells circulate in the bloodstream, ready to respond to infections. - Lymph Nodes: These are small, bean-shaped structures that filter lymphatic fluid and house many immune cells. - Spleen: This organ filters blood and helps manage the immune response. - Bone Marrow: The primary site of new blood cell production, including immune cells. - Thymus: An organ where T cells mature. - Mucosal Tissues: Immune cells are also found in mucosal tissues such as the gut, respiratory tract, and urogenital tract.
