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Why Do Veins Appear Blue?

At first glance, you can assume that the blue color of your veins means that your blood is blue. Itu2019s a common myth, but reality is a bit more scientific. Your blood is always red, due to haemoglobin, which is the protein carrying oxygen. Oxygen-containing blood is bright red, while oxygen-free blood (such as in veins) is dark red. So, why do the nerves look blue?

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Why Do Veins Appear Blue?

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