Caenorhabditis elegans,
Ascaris lumbricoides,
Pristionchus pacificus,
Trichuris suis,
Necator americanus,
Ancylostoma duodenale,
Heligmosomoides polygyrus,
Nippostrongylus brasiliensis,
Lumbricus terrestris,
Ostertagia ostertagi
Caenorhabditis elegans,
Ascaris lumbricoides,
Pristionchus pacificus,
Trichuris suis,
Necator americanus,
Ancylostoma duodenale,
Heligmosomoides polygyrus,
Nippostrongylus brasiliensis,
Lumbricus terrestris,
Ostertagia ostertagi
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Give me a list of 10 nematode species
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