Taxonomy: s.f. Ascaridoidea
Animal: Ascaris lumbricoides 15.jpg
Sites: Gut
Ascaris lumbricoides (round worm) adult passed by a human. Males 150 - 200 x 2-4 mm, Female 200-350 x 4-6 mm. Mature or immature adults may wander out of the anus spontaneously or with the faeces or wander out of the mouth or nose.

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