2011GenNematode - 11/15/2011 Nobel prize in Physiology or...

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11/15/2011 1 for their discoveries concerning 'genetic regulation of organ development and programmed cell death' Nobel prize in Physiology or Medicine, 2002 S. Brenner, R. Horowitz and J. Sulston
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11/15/2011 2 Phylum Nematoda The roundworms Largest group of helminthic infections of humans. 1 billion cases of ascariasis and 800 million of trichuriasis Are not host specific Note. Nematodes (like other worms) except Strongyloides don’t multiply in the human host. General characteristics Morphology of Adult • Size Generally cylindrical and tubelike Cuticle Mouth Buccal cavity Esophagus Digestive tract complete Reproductive system Nervous and excretory system
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11/15/2011 3 Morphology cont’d The cuticle layered exocuticle and endocuticle Hypodermis Longitudinal (hypodermal) cords Longitudinal muscles polymyarian (Ascari s) multiple rows Meromyarian (Enterobius and Ancylostom a) two to five holomyarian–no more than 2 rows of cells Pseudocoelom
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This note was uploaded on 11/21/2011 for the course ZOO 4232 taught by Professor Kima during the Fall '10 term at University of Florida.

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2011GenNematode - 11/15/2011 Nobel prize in Physiology or...

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