Household dust. Coloured Scanning Electron Micro- graph (SEM) of a sample of household dust. Dust contains an assortment of substances which can cause asthma or other allergic reactions. The allergens seen here include: long hairs such as cat fur,twisted synthetic and woollen fibres,serrated insect scales,a pollen grain,plant and insect remains. Asthma or hay fever are often a hypersensitive and irritant response to substances that,in most people,are harmless. Airborne allergens may come into contact with the respiratory airways,skin or surface of the eye. Magnification: x115 at 6x7cm size. x380 at 8x12ins | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Power And Syred |
Taille de l’image : | 4487 px × 3360 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |