Hay fever sufferer and pollen,composite image. Magnified images of pollen grains form the background,with a hay fever sufferer in the foreground with a cutaway depiction of his sinuses and nasal cavity (both red). Pollen grains are released when flowering plants reproduce. Some people become sensitised to pollen in the air,and have an allergic reaction (rhinitis,or pollinosis) whenever they are in contact with it. The symptoms of an attack include inflamed,streaming eyes and a running,blocked nose. The symptoms are caused by a massive release of the chemical histamine in the body in response to the pollen | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Doncaster And Bassetlaw Hospitals |
Bildgröße: | 4575 px × 4618 px |
Modell-Rechte: | Derzeit liegt noch kein Release vor. Bitte kontaktieren Sie uns vor Verwendung. |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |