File:Arm veins - 20090522.jpg - Wikimedia Commons
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Farbfoto
CC BY Colin Davis from Chicago, United States. 2.0
http://creativecommons.org/licenses/by/2.0/deed.en
Farbfoto
CC BY Colin Davis from Chicago, United States. 2.0
http://creativecommons.org/licenses/by/2.0/deed.en