Researchers say some humans are developing an extra artery in their arms – SlashGear

Researchers from Flinders University and the University of Adelaide in Australia have discovered something interesting in some humans. When in the womb, babies have a temporary artery that runs down the center of the forearm that typically vanishes over time. However, that artery isn’t disappearing as often as it used to.
Scientists say that means more adults than ever have what amounts to an extra channel of vascular tissue under the wrist. The change is a significant increase from the mid-188…

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