- the system by which lymph is returned from the cells to the blood and by which white blood cells are produced in response to inflammation or presence of antigens; in mammals, the system includes the lymph glands, vessels and sinuses through which lymph is carried, and lymphoid tissues, as bone marrow and the thymus.
- an extensive network of capillary vessels that transports the interstitial fluid of the body as lymph to the venous blood circulation
