To act as a robust barrier against pathogens while also absorbing needed nutrients, the lining of the intestines must regenerate on a daily basis to remain equal to the task. The intestine's resident ...

Medically reviewed by Archana Sharma, DO Key Takeaways The lymph system helps cleanse the body, but it's not the main organ ...

While cells in blood vessels and in most other lymphatic vessels are carried along by a flow of fluid, virtually no flow is present in lymphatic capillaries. Consequently, cells in these capillary ...

Certain cells have an unusual shape that is similar to an oak leaf or puzzle piece, and researchers have found that the form of these cells helps them withstand dramatic changes in volume. These cells ...

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

We spend a lot of time caring for the body’s circulatory system, with almost all of our attention focused on the health of our cardiovascular system, the heart and its 60,000 miles of arteries, veins ...

Skin is pretty amazing. It is our largest organ, accounting for about 15% of our body weight. It protects our insides from the outside world, cools us off, and keeps us warm. To keep it intact, the ...

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 ...