Threadworm in intestine. Coloured scanning electron micrograph (SEM) of a threadworm (Trichostrongylus vitrinus) in the small intestine of a sheep. Threadworms (also known as roundworms) belong to the phylum Nematoda,which contains many different species of parasitic and free- living worms. T. vitrinus is an important parasite of sheep. Here,a threadworm is burrowing through and damaging the gut wall. Part of its cylindrical body is visible. The body is covered with a thick,tough cuticle secreted by the underlying ectoderm. Magnification: x160 when printed 10cm wide | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gray, E. |
Taille de l’image : | 4300 px × 3264 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |