There are four components - or parts - of the blood: red blood cells, white blood cells, plasma and platelets. Blood carries things you need, like oxygen and glucose, and waste products ...

Drying droplets have fascinated scientists for decades. From water to coffee to paint, these everyday fluids leave behind ...

Or, you can donate blood components like plasma, red blood cells, and platelets, where a machine separates your blood into the various components and then returns the leftovers to your body.

The initiative, called the Red Blood Cell Factory program, aims to study the insertion of "biologically active components" into red blood cells. The agency’s goal is to improve soldiers ...