Trichomonas augusta stained with protein silver technique.  The flagella are obvious to the upper right. The undulating membrane is the wavy vertical line.  1000x

Trichomonas augusta stained with protein silver technique.  The undulating membrane is the wavy structure at the bottom, anterior flagella to the left. The undulating membrane is wrapping around the cell (underneath the image) and emerging as the trailing flagellum (vertical and somewhat blurred).  1500x