JAMES STEVENSON / SCIENCE PHOTO LIBRARY JAMES STEVENSON / SCIENCE PHOTO LIBRARY
Comparison of a hand of a patient suffering from Xanthaemia or carotenaemia (right) and a normal hand (left). Xanthaemia is the presence in the blood of an excess of the yellow pigment carotene. The condition is caused by an excessive intake of carrots or tomatoes, or other vegetables containing the pigment.
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