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Hematology

life science Maturity 11-13 Next article →

Doctors study your red blood. They look at how it works. They help when you are sick. This helps you stay well. It is very cool work. Do you know your blood color?

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A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.