Tainted Deity
Blue veins edit
Hi, last year you left a question on the Cyanosis talk page asking why veins are blue. You are correct that blood is always red. An optical effect can cause dark blood to appear blue, and also causes cyanosis, and causes the blue color of the sky and large bodies of water. I edited the article to include this fact, and referenced a great paper on the topic you might be interested in reading. Thought you'd like to know -- enjoy! Xiphoris (talk) 09:01, 7 February 2008 (UTC)
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