Stinging nettle hairs SEM

Numéro d’image : 12525923
Stinging nettle hairs SEM
Nettle stinging hairs. Coloured scanning electron micrograph (SEM) of stinging hairs on a female flower of a stinging nettle (Urtica dioica). Stinging nettles are covered in long poisonous hairs which cause pain and inflammation when brushed against. They inject a mixture of acetylcholine, a neurotransmitter which activates nerves, and histamine, which is produced in allergic reactions. The shorter hairs are harmless. Nettles are a common plant of wasteland and grassland, and have these hairs as a protection against herbivores. Magnification: x95 at 6x7cm size. x150 at 4x5ins
Licence : Droits gérés
Crédit: Science Photo Library / EYE OF SCIENCE
Taille de l’image : 4000 px × 4000 px
Model Release : Non requis
Property Release : Non requis
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