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 ...

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.

Plasma is the liquid component of your blood. Also known as blood plasma, it makes up about 55% of your blood and has a light yellow color. When you donate blood, the plasma can be separated out and ...

Blood clots are among the most feared medical emergencies, and for good reason. They can lead to heart attacks, strokes and death. But not all clots are dangerous. In fact, clotting is a natural and ...