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 ...

For thousands of Americans, donating plasma is a lifeline. In the 90 minutes it takes to donate, they make five times the federal minimum wage. Americans supply two-thirds of the world's blood plasma.

Getty Images But scientists caution that it ... Every human has two eyes, one body, their blood is red, and plasma." It is unclear if and how many people have been treated with plasma therapy ...