Running extreme distances may strain more than just muscles and joints. New research suggests ultramarathons can alter red blood cells in ways that make them less flexible and more prone to breakdown, ...

The brain relies on real-time delivery of oxygen and nutrients through its microvasculature, which threads through neural ...

Red blood cells are the most abundant cells in the body. It has long been known that when red blood cells break down or anemia occurs due to bleeding, the hormone erythropoietin (EPO) increases, ...

The amino acid glutamine plays an unexpected role in erythropoiesis, the differentiation of erythroid progenitor cells into mature red blood cells. Ordinarily, glutamine is broken down by stem cells ...