The 16 Best Science Visualizations of 2011
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Cucumber Skin Barbs
Under 800X magnification, this honorable-mention-winning photograph shows toxin-filled barbs called trichomes on the skin of an immature cucumber.
The trichomes bear sharp points 40 times thinner than a sewing needle and help protect the growing fruit from predators. The toxins they release are called cucurbiticins and are the most bitter compounds known.
(via wired)
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