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Deciphering the Riddle: Why Do Veins Appear Blue?

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Have you ever wondered what veins appear blue against our skin? It's a common question, and the answer isn't as simple as you might think. While blood flowing through arteries is bright red, the blood in veins appears https://harmonykvnx453769.blognody.com/41368632/exploring-the-secret-why-is-blood-in-veins-blue

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