20.06.2015 The human body is permeated with kilometers of blood vessels: capillaries, arteries and veins. Blood - the most amazing fluid in the world, moves within them. There are a whole world of cells in it. Each cell performs its unique function, moving along the vessels with an incredible speed. Erythrocytes bring oxygen to the tissues and take out carbon dioxide. Platelets check the integrity of the vessels walls. Leukocytes explores everything they meet on their way to identify a stranger. And all this happens simultaneously, each millisecond. Scientists needed centuries to understand this. But how many more scientific mysteries does blood conceal? ...
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https://www.youtube.com/watch?time_continue=2&v=kAj3shh7cUA
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