From The School of Biomedical Sciences Wiki
They are small encapsulated structures that protect the body from foreign antigens. They do this by acting as a filter to trap the particulate matter in the lymph that percolates through them.
Lymph nodes can be many different sizes and contain macrophages and lymphocytes (two different types of leucocytes) within their sinuses. These are essential in the immune system.
- ↑ Drake, R. Wayne Vogl, A. and Mitchell, A (2009). Gray's Anatomy. 2nd ed. Churchill Livingstone, p.32.
- ↑ Baggaley, A. (2001). Human Body. London: Dorling Kindersley, p.190.