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Why Are Veins More Blue on Some People Than Others? The Science Behind This Phenomenon
Blue light, on the other hand, has shorter wavelengths and is not absorbed in the skin the same way. Therefore, the blue ...
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Why Some People Have Hidden Or 'Hard To Find' Veins?
The use of such veins or other access points, such as cephalic, basilic, or dorsal hand veins, when they cannot easily be found, are how doctors and nurses describe a situation as dealing with ...