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/ The Ultimate Human Body 2.0 / DKMMBODY.ISO / QUIZ / CHEST / QZCH0028.PNG

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Portable Network Graphic  |  1996-08-29  |  9KB  |  320x240  |  8-bit (63 colors)

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OCR: What is special about heart muscle? A It needs no blood supply BIt does not tire CIt works without oxygen

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