Dog roundworm. Coloured scanning electron micrograph (SEM) showing the head of a dog roundworm (Toxocara canis). This is a dog parasite whose eggs are

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Dog roundworm. Coloured scanning electron micrograph (SEM) showing the head of a dog roundworm (Toxocara canis). This is a dog parasite whose eggs are found in dog faeces. Humans, often children, can become infected with the eggs (which is known as toxocariasis) when coming into contact with an infested dog or contaminated soil. The swallowed eggs hatch in the intestines and the larvae then migrate to organs such as the liver, lungs, brain and eyes. Symptoms include asthma, seizures, pneumonia and blindness. Magnification: x360 when printed 10 centimetres wide.

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Size: 4201px × 4201px
Photo credit: © EYE OF SCIENCE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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