Pear Shaped Nervous Jerky 1 Not visible in unstained mounts 3-5 anterior. Undulating membrane extending length of body. Spiral groove across ventral surface. Oval Jerky 1 Not visible in unstained mounts 3 anterior. One side of body flattened.
Posterior flagellum extends free posteriorly.
Not visible in unstained mounts 1 anterior. Differential morphology of flagellates found in stool samples of humans. Flagellate trophozoites are best identified in fresh saline mounts, allowing you to observe the way that they move. Use Key 1 to help to identify stained flagellate trophozoites. Iodine solutions are used primarily to stain flagellate cysts, this makes it possible to see the structure of the nuclei.