LM of Toxocara canis (dog roundworms)

LM of Toxocara canis (dog roundworms)

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Credit: SINCLAIR STAMMERS/SCIENCE PHOTO LIBRARY.

Caption: Light micrograph of the first larval stages of 2 dog roundworms, Toxocara canis, the cause of toxocariasis in man (a parasitic infestation caused by oral contact with material contaminated by eggs deposited in dog faeces). The larvae migrate around the body destroying various tissues; the liver may enlarge & the lungs inflame. Symptoms include fever, joint & muscle pains, vomiting & convulsions: larvae may lodge in the retina of the eye, causing inflammation & granuloma. Widely distributed throughout the world & primarily affecting children, there is no satisfactory treatment for the disease. Magnification X 56 at 35mm size.

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Keywords: animal, granuloma, invertebrate, invertebrates, light micrograph, nature, nematoda, nematode, roundworm, roundworms (dog), toxocara canis, toxocariasis, wildlife, zoology

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