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Microscopy Trophozoites of Trichomonas vaginalis are pyriform and 7-30 µm long. They have five flagella: four anteriorly directed flagella and one posteriorly along the outer membrane of the undulating membrane. The large nucleus is usually located at the wider, anterior end and contains many chromatin granules and a small karyosome. The cytoplasm also contains many granules, but these are often not seen in Giemsa-stained specimens.
A: Two trophozoites
of T. vaginalis obtained from in vitro culture, stained with Giemsa.
C: Trophozoites of T. muris stained with iodine. Click here to view a video clip #1 of Trichomonas
vaginalis (Adobe Flash) Click here to view a video
clip #2 of Trichomonas vaginalis (Adobe Flash)
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