Hedgehog spines. Coloured scanning electron micrograph (SEM) of hedgehog spines (wide columns) and hairs (narrow strands). A spine is a modified hair made from the protein keratin. The interior,seen in the broken spines at lower left,is hollow and crossed with transverse septa,making the spine strong but light. Adult hedgehogs have about 8000 spines,which are used to protect against predators. Magnification: x40 when printed at 10 centimetres wide | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 3992 px × 3006 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |