Answer:
Blood is a combination of plasma and cells that circulate through the entire body. It is a specialized bodily fluid that supplies essential substances around the body, such as sugars, oxygen, and hormones.
It also removes waste from the cells in the body.
Hematologists work to identify and prevent blood and bone marrow diseases, as well as studying and treating the immune system, blood clotting, and the veins and arteries.
In the United States (U.S.), blood diseases accounted for between 9,000 and 10,000 annual deathsTrusted Source from 1999 to 2010. This constitutes less than one percent of total deaths from disease.
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