Gravity reduces blood flow to the brain, and this reduced circulation may contribute to brain ageing. This is a new ...

During venipuncture, pressure differences between the vein and the vacuum in the Vacutainer forces blood into the tube. Image by Tannim101 (CC BY 3.0) During venipuncture, pressure differences between ...

Acetylcholine regulates blood flow, but the source of blood acetylcholine has been unclear. Now, researchers have discovered that certain T cells in human blood can produce acetylcholine, which may ...

Red blood cells carry oxygen from the lungs to every other organ, and blood-forming stem cells must make about 200 billion new red blood cells each day to keep the oxygen flowing. For many years, ...

It is a basic principle in biology- blood is made in the bone marrow. It’s where the cells(hematopoietic stem cells (HSCs))responsible for generating red blood ...

A puzzle for millennia, the movement of blood through the body was solved by an English physician in the 17th century, paving the way for modern medical technologies. What do chemotherapy, dialysis, ...