What Color is Blood REALLY? (6 min version)
What Color is Your Blood?
Your blood is red, so why are your veins blue?
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What Color is Blood in Your Body?
What color is blood REALLY? (Full length version)
What color is blood? Red? Blue? Black?
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What color of blood is healthy?
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What causes black blood in the body?
What's the difference between bright red and dark red stage blood?
Why Is Blood Red In Color? - Amazing Facts About Human Body
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