Animated scanning electron micrograph (SEM) of the leaf of a stinging nettle (Urtica dioica). This plant has many hollow stinging hairs called trichomes on its leaves and stems. They act like hypodermic needles, injecting histamine and other chemicals that produce a stinging sensation when contacted by humans and other animals. Despite this defence, the stinging nettle has a long history of use as a medicine and as a food source.
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WebID:
C01807495
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RM
Super High Res Size:
1920X1080
Duration:
00:00:10.000
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QuickTime
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25 fps
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download
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200X112 (0.00 M)
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NO
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No