A 2026 study found semaglutide may improve lymphatic pumping. Here's what that reveals about how your lymph system really ...

Your lymphatic system filters waste, runs your immune defense and has no pump. Here's what doctors say keeps it moving.

The lymphatic system is a network of branching vessels that regulate fluid balance and support the immune system. Its smallest capillaries, comprised of a single endothelial cell layer, must stay ...

The frequent spread of certain cancers to lymph nodes often necessitates surgery or radiation therapy that damages the lymphatic system and can cause lymphedema, a condition of localized fluid ...

The cells that make up the walls of the finest of all lymphatic vessels have a lobate, oak leaf-like shape that makes them particularly resilient to changes in fluid volume. A similar cell shape also ...

These vessels are surrounded by a well-sealed layer of cells and a thicker membrane of connective tissue. Consequently, migration across these barriers is more difficult for dendritic cells, and entry ...

In its response to pathogens and vaccines, the immune system relies on dendritic cells, white blood cells that patrol the body's tissues, collect components of pathogens and vaccines and transport ...

Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them. They help to connect your arteries and veins in addition to facilitating the exchange of ...