Spider and silk threads, ESEM

Spider and silk threads, ESEM

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Caption: Spider and silk threads. Coloured environmental scanning electron micrograph (ESEM) of a spider spinning silk (blue threads). At the rear of its abdomen are its spinnerets (not seen), structures used to produce the silk which the spider uses to weave a web and trap its prey. Some spiders also use silk to spin cocoons for their eggs. 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.

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Keywords: abdomen, anatomical, anatomy, animal, arachnid, arachnology, arthropod, biological, biology, coloured, environmental sem, esem, false-coloured, fauna, invertebrate, invertebrates, legs, mouthparts, nature, one, scanning electron micrograph, scanning electron microscope, sem, silk, silk thread, single, spider, spinner, spinneret, spinnerets, spinning, thorax, web, wildlife, zoological, zoology

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