See how red blood cells react when exposed to hand sanitizer. A surprising microscopic experiment that’s both educational and ...

For anyone planning to donate blood, the American Red Cross is encouraging people to consider using a method that can save more lives by collecting more red blood cells.

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 ...

A new needle-free technology isn't ready to replace blood draws, but it could serve as a screening tool to flag people who ...

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

Almost all animal species—including humans—have blood cells, but between different species our blood tells different stories. The lineage and components of blood cells vary widely, and this variety is ...