Parasitic Worms....
Ascaris lumbricoides, the large roundworm of humans. In
the foreground is a pile of Ascaris worms collected from people living in a small
village in the south of India. The worms will mainly have come from children.
Tococara canis. This is a scanning
electron microscope picture of the microscopic juvenile forms of the dog parasite
Toxocara canis, which is common in the UK. The eggs of the parasite are shed
in the faeces of dogs (puppies in particular) and contaminate parks and gardens,
where the infective larvae develop. Humans who injest the eggs by the ingestion
of soil (usually children) become infected and the juvenile worms migrate through
the soft tissues of the body, including the brain and the eyes, for up to ten
years.
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