With each heartbeat, blood courses through your body. Some traverse arteries from the lungs back to the heart, and some navigate through capillaries in the thinnest layers of your eyelid, almost ...

Scientists identify a new blood type, "Gwada negative," adding the 48th blood group system to human biology. (CREDIT: CC BY-SA 4.0) A routine medical test turned extraordinary for a woman from the ...

Stem cells are precursors of a variety of different cells: They can turn into anything from blood to bone to muscle. Human blood stem cells, known as hematopoietic stem cells, are the forerunners of ...

Discover how therapeutic peptides act as biological messengers to treat disease, improve metabolism, and enhance immune ...

For the first time, researchers have successfully connected a functioning liver from a genetically modified pig to a human body.* In a step toward testing the procedure in living people, a team at the ...