- They are small solid structures detected at varying sites together with the lymphatic system.
- Peripheral organs of the lymphatic system, performing the function of a biological filter through which lymph flows from organs and body parts.
- Flowing through the sinuses of the medulla, the lymph is enriched with antibodies that are produced by the plasma cells of the brain strands.
- The lymph node is a barrier to the spread of both infection and cancer cells. Lymphocytes matured in it are protective cells that actively involved in the destruction of foreign substances and cells.
- The cortex contains follicles comprised mainly of B cells and follicular dendritic cells.
- The paracortical regions contain masses of T cells.
- The primary function is to produce an immune response against any microbe they trap.
Source: Everyday Health, By Jane Bianchi.