Scientists have generated human stem cell models which contain notochord -- a tissue in the developing embryo that acts like a navigation system, directing cells where to build the spine and nervous ...

An organ is a group of tissues that work together to perform a specific task in the body, such as digesting nutrients or producing chemical messengers that enable brain cells to communicate. Although ...

The body's organ systems include your circulatory and respiratory systems, your brain and nervous system, and the organs of your gastrointestinal tract. Each group of organs has a different complex ...

A few months after receiving a diagnosis of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), a neurological disease often triggered by an infection in which serious fatigue leaves many ...

Have you ever given any extra thought to your stomach lining or the bones in your skull or pondered whether double uteruses ...