Plasma makes up about 55 percent of your blood. It carries out several key functions in the body, including transporting waste products. Read on to learn more about plasma, including what it’s made of ...

Blood plasma is a light yellow liquid that makes up about half of a person’s blood. Blood plasma is vital for fighting infection, maintaining correct blood pH levels, helping blood to clot, and ...

The team used human stem cells to create embryo-like structures dubbed “hematoids” that mirror some features of early human ...

Red blood cells are important mediators of the innate immune system. Depending on the cellular environment, these cells either activate the immune system or maintain the system in a dormant state. In ...

Get to know the functions of your heart, blood vessels, and blood itself and how they work together to maintain your health.

Components of the blood or hematopoietic system derive from stem cell subtypes rather than one single stem cell that gives rise to all the different kinds of blood cells equally, say scientists in a ...