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Blood as transport system
You have probably seen blood in a film or filmstrip about blood, or even some fresh blood. But have you ever seen some preserved blood on a microscope slide? Blood is a liquid with some small solid objects in it. The red blood cells carry oxygen. The white blood cells help the body to fight […]
Posted in Heart
Also tagged blood, blood vessels, Heart, plasma, platelets, red blood cells, transport system, white blood cells
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