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b112_Lecture_33_p02 - MedicinalLeeches LeechinEye...

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2/25/2008 15 Medicinal Leeches Haementeria ghilianii Leech in Eye Leeches in the eye of an unfortunate soul who drank from the wrong pond in India. Phylum Nemotoda Roundworms ~ 90,000 species, maybe ~ 900,000 exist Parasitic & free living Unsegmented, tapered at both ends, fluid filled pseudocoelom, longitudinal muscles Male & female, sexual, resistant zygotes Abundant in soil & detritus Notable Nemotodes Caenorhabditis elegans Trichinella spiralis Numerous other parasites in man and other i l animals Plant root parasites Ascaris lumbricoides – Worms Expelled from Human Intestines 4 cm ruler
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