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Oxyurus vermicularis

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Pinworm \Pin"worm`\, n. (Zo["o]l.)
   A small nematoid worm ({Oxyurus vermicularis}), which is
   parasitic chiefly in the rectum of man. It is most common in
   children and aged persons.
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