50.5 MB (1.2 MB compressed)
4201 x 4201 pixels
35.6 x 35.6 cm ⏐ 14.0 x 14.0 in (300dpi)
EYE OF SCIENCE / SCIENCE PHOTO LIBRARY EYE OF SCIENCE / SCIENCE PHOTO LIBRARY
Dog roundworm. Coloured scanning electron micrograph (SEM) showing the tail of a female dog roundworm (Toxocara canis), showing its reproductive structures (pink). 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: x120 when printed 10 centimetres wide.
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