| 11. | Its main use is for protecting livestock against roundworm, strongyles and pinworms.
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| 12. | "Setaria cervi " shows sexual dimorphism as a typical roundworm.
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| 13. | Several roundworm and spirurid species have been found in the lining of the gizzard.
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| 14. | Woodrats may ingest the eggs of the roundworm while foraging at raccoon latrine areas.
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| 15. | They have more sophisticated pharynxs than most roundworms.
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| 16. | Roundworms and even yeast are much closer to humans genetically than their outward forms suggest.
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| 17. | In the new method, British researchers added genetic material from a roundworm to bacteria.
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| 18. | Roundworms are typically microscopic, and occur in nearly every environment where there is water.
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| 19. | Roundworms infect hundreds of millions of people.
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| 20. | Predators include fish, gastropods ( snails ), and nematodes ( tiny roundworms ).
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