The lymphatic system is a network of vessels, nodes, and ducts that pass through almost all bodily tissues. It allows the circulation of a fluid called lymph through the body in a similar way to blood ...

This article, the first in a six-part series, gives an overview of the lymphatic system, which circulates lymph fluid around the body to drain tissue, transport fat and activate immune responses. This ...

The lymphoid organs’ purpose is to provide immunity for the body. This second article in a six-part series explains the primary and secondary lymphoid organs and their clinical significance and ...

The mammalian intestine is richly supplied with lymphatic vasculature, which has functions ranging from maintenance of interstitial fluid balance to transport of antigens, antigen-presenting cells, ...

The popliteal lymph nodes lie in the tissues behind a person’s knee. Infections and autoimmune conditions can cause them to swell. It is rare for cancer to affect the popliteal lymph nodes. According ...

How does the brain take out its trash? That is the job of the brain's lymphatic drainage system, and efforts to understand ...