Human bodies make 2 million red blood cells per second. They each live for 120 days and spend that time zooming completely around the body every 20 seconds, carrying oxygen from the lungs to other ...

Quiz: Which blood tests matter most for aging adults? Most people know they should get blood work done. Fewer know what each ...

Scientists have long known that people living at high altitudes, where oxygen levels are low, have lower rates of diabetes than people living closer to sea level. But the mechanism of this protection ...

Scientists have long been puzzled by how maturing red blood cells manage to produce all the hemoglobin they need to carry oxygen to tissues, even after shedding the vital structures they need to ...

The immune system consists of inflammatory and regulatory T cells (Tregs) that promote or dampen immune activity, respectively. These cells react to specific antigens that specialized cells like ...

Learn how to treat a sickle cell disease crisis at home and when you should go to a medical center for more care.

Firefighter-paramedics in Hesperia are now equipped to provide life-saving blood transfusions to trauma patients in the field ...