Why do we have blood and what does it do?
But Why: A Podcast for Curious Kids
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The Importance of Blood Drawn
"It can be hard when you're any age but especially when you're little to feel like things are happening to my body that I don't have control over," she says. "Seeing your blood or seeing a part of a tissue on a glass slide and looking at the cells really tells a story about what might be hurting you."
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