False-colour scanning electron micrograph (SEM) of a pollen grain from Timothy grass,Phleum pratense. The wind-borne pollen grains of this species are known to cause hay fever. The grain is seen here in its dessicated form; it would appear spherical if seen in situ on the anther. Magnification: x570 at 35mm,x1100 at 6x7cm,x4000 at 8x10 inch size. False colour has been added by a photographic process called Colorvir | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
Taille de l’image : | 3661 px × 4959 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |