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19 oct 2025

  • actant 05:2405:24 19 oct 2025 TameraMcelroy62 discusión contribs. 5784 bytes +5784 Página creada con «<br>In lots of Tv exhibits, diagrams and models, deoxygenated blood is blue. Even looking at your own body, veins appear blue through your skin. Some sources argue that blood from a lower or scrape starts out blue and turns pink upon contact with oxygen. Other sources say that blood is always crimson. It’s time to settle the controversy once and for all. Where did the concept of blue blood come from? The confusion about blood’s colour started in the 19th century,…»
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