Stinging nettle (Urtica dioica) stinging trichome on a leaf,coloured scanning electron micrograph (SEM). The large spike at upper centre is a stinging trichome. The other,shorter trichomes are non-stinging ones. When brushed against,the stinging trichome breaks off and its tip penetrates the skin,injecting acetylcholine and histamine. These chemicals cause the painful and inflammatory response known as a nettle sting or rash. Magnification: x63 when printed at 10 centimetres high | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / PETER BOND, EM CENTRE, UNIVERSITY OF PLYMOUTH |
Bildgröße: | 3650 px × 4861 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |