ID#: 5230 Description: This micrograph reveals the cephalic alae in the head region the nematode Enterobius vermicularis
, or human pinworm. The time between ingestion of infective eggs to oviposition by the adult females is about 1 mo. The life span of the adults is about 2 mo. Gravid females migrate nocturnally outside the anus, and oviposit while crawling on the skin of the perianal area. Content Providers(s): CDC Creation Date: 1982 Copyright Restrictions: None
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