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Dosya:Hookworm LifeCycle.gif

Hookworm_LifeCycle.gif ((579 × 435 piksel, dosya boyutu: 21 KB, MIME tipi: image/gif), 0,2 sn)

Özet

Açıklama
English: hookworm lifecycle

Eggs are passed in the stool , and under favorable conditions (moisture, warmth, shade), larvae hatch in 1 to 2 days. The released rhabditiform larvae grow in the feces and/or the soil , and after 5 to 10 days (and two molts) they become filariform (third-stage) larvae that are infective . These infective larvae can survive 3 to 4 weeks in favorable environmental conditions. On contact with the human host, the larvae penetrate the skin and are carried through the veins to the heart and then to the lungs. They penetrate into the pulmonary alveoli, ascend the bronchial tree to the pharynx, and are swallowed . The larvae reach the small intestine, where they reside and mature into adults. Adult worms live in the lumen of the small intestine, where they attach to the intestinal wall with resultant blood loss by the host . Most adult worms are eliminated in 1 to 2 years, but longevity records can reach several years.

Some A. duodenale larvae, following penetration of the host skin, can become dormant (in the intestine or muscle). In addition, infection by A. duodenale may probably also occur by the oral and transmammary route. N. americanus, however, requires a transpulmonary migration phase.
Tarih 17 Şubat 2005 (original upload date)
Kaynak

CDC - Department of Parasitic Diseases

Yazar The original uploader was Sonett72 at İngilizce Vikipedi.
İzin
(Bu dosyanın tekrar kullanımı)		 PD-USGov-HHS-CDC
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  • Fransızca
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Lisanslama

Public domain
This image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.

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  • 2005-02-17 14:20 Sonett72 579×435×8 (21929 bytes) hookworm lifecycle

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güncel14.59, 29 Mart 200714.59, 29 Mart 2007 tarihindeki sürümün küçültülmüş hâli579 × 435 (21 KB)Liftarn{{Information |Description=hookworm lifecycle source: [http://www.dpd.cdc.gov/dpdx/HTML/ImageLibrary/Hookworm_il.htm centre for disease control.gov] |Source=Originally from [http://en.wikipedia.org en.wikipedia]; description page is/was [http://en.wikipe

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