False col SEM of Trichostrongylus vitrinus

False col SEM of Trichostrongylus vitrinus

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Credit: EDWARD GRAY/SCIENCE PHOTO LIBRARY

Caption: False colour scanning electron micrograph (SEM) of the threadworms Trichostrongylus vitrinus in the anterior small intestine of a sheep. Threadworms (also known as roundworms) belong to the phylum Nematoda, which contains many different species. The picture shows 2 threadworms burrowing through and damaging the gut wall. Part of their cylindrical body is visible. The body is covered with a thick, tough cuticle (showing a banded pattern) secreted by the underlying ectoderm. Under this is a longitudinal muscle layer divided into 4 lengthwise bands, one of which can be seen in the picture as a light line running along the body. Magnification: x55 at 35mm size.

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Keywords: animal, invertebrate, invertebrates, nature, nematoda, nematode, roundworm, sheep, threadworm, trichostrongylus vitrinus, wildlife, zoology

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