- 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.
trichomonase trophozoite
- The cytoplasm also contains many granules, but these are often not seen in Giemsa-stained specimens.
Giemsa-stained Trichomonas vaginalis trophozoites
