Calling all white blood cells

NEUROtiker [Public domain] via Wikimedia Commons

Within a short time after a wound is sustained, white blood cells, or leukocytes, flood the wound area, sometimes traveling from relatively long distances. But the signal that calls them to the wound site has, until recently, been a mystery. Now, Phillip Neithammer (Harvard Medical School, Boston, MA), Clemmens Grabber (Dana-Farber Cancer Institute, Boston MA) and colleagues report that hydrogen peroxide is the molecule that makes the call, at least in zebrafish.

Lab Anim. (NY) 38, 221 (2009).
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