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Our bodies are the most complex machines ever created, but they all basically work the same. Learn how the human anatomy works to keep us all going with the videos in this section.

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Heart Attack Repair

Watch this video about repairing damaged heart tissue on HowStuffWorks. Researchers at Johns Hopkins University have found that stem cells from bone marrow that can help repair tissue after a heart attack. See how heart attack repair works in this video from ScienCentral.
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