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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Delong, Garry |
Bildgröße: | 2736 px × 3648 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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