Why do we have blood and what does it do?
But Why: A Podcast for Curious Kids
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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