Hexamita intestinalis, an octaflagellate living in the rectum of Rana
pipiens. This cross section reveals three of the eight flagella with
the two to the left cut exactly perpendicular to the long axis, revealing the
9+2 microtubular arrangement. The one to the left is an anterior flagellum
and to its right, inside the cell is one of the two flagella that arise
anteriorly and pass through the cell exiting at the posterior end. On the
opposite side is the second posterior flagellum. The large body in the
middle is one of the two nuclei. The other enclosed bodies are bacteria
in various states of digestion. 40,000x