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S01:E04 - The Bone Marrow
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Once Upon a Time... Life

Season 1 Episode 4 - The Bone Marrow

Today we learn about the content of our bones, which is called bone marrow. The main part of red and white corpuscles and the platelets are being produced here. Young Pierrette doesn't feel so well one day and that's when she realizes how important those blood components are.
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