Spider's silk strands. Coloured scanning electron micrograph (SEM) of silk strands from the egg case of a black widow spider (Lactrodectus sp.). These silk strands have been spun into a sac in which the female black widow spider lays her eggs. Silk is also used by many spiders to make webs to trap their prey. Spider's silk is made of a protein polymer called fibroin. It is very elastic and can be stretched 30-40 percent of its length before it breaks | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 3000 px × 2192 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |