Light micrograph of a section through an oak gall (oak apple),likely a reaction to an insect parasite. As shown here,galls often contain cells with inclusions of pigmented material,often tannin,which was until the 20th century in the production of a very permanent ink. Also present are several vascular bundles. Magnification 28x when printed at 10 cm | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Delong, Garry |
Taille de l’image : | 3648 px × 2736 px |
Model Release : | Non requis |
Property Release : | Non requis |
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