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Nevus

nevus --> naevus

(Science: dermatology, tumour) tumour like but nonneoplastic hamartoma of skin. A vascular naevus is a localised capillary rich area of the skin (strawberry birthmark, sometimes the much more extensive port wine stain).

A mole benign melanoma) is a pigmented naevus, a cluster of melanocytes containing melanin.


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Blood is red.

... blue light is reflected back from the vein. Black lesions deep under the skin also will appear blue for the same reason, hence the term “Blue Nevus” for a mole that is located deep in the skin. Is the lightbulb inside of your brake light on your car red? Probably not, it's white, it just has ...

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by rlj
Thu Sep 06, 2007 9:34 pm
 
Forum: Human Biology
Topic: Blood is always red, never blue.
Replies: 57
Views: 374665


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