LM of larval nematode worm, Toxascaris leonina

LM of larval nematode worm, Toxascaris leonina

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Credit: SINCLAIR STAMMERS/SCIENCE PHOTO LIBRARY

Caption: Light micrograph of the larval stage of the nema- tode worm, Toxascaris leonina. Nematodes are threadlike and elongated roundworms, the posterior end of the body is more pointed than the anterior. They are a large class of mainly parasitic worms which infect both plants and animals. Related to Toxascaris leonina from Egypt (shown here) is the Maw-worm, Ascaris lumbricoides. The Maw-worm has infected humans at least since the ancient Egypt- ians. It's not known whether Toxascaris is a human pathogen. However, this larval stage would hatch from eggs, and preceed an adult stage. Hookworm and threadworm are other nematode infections found in humans. Magnification: unknown.

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Keywords: animal, invertebrate, invertebrates, larval, light micrograph, nature, nematoda, nematode, parasite, roundworm, toxascaris leonina, wildlife, zoology

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