in vivo

Description:

Portrait of Euglena acus (Ehrenberg,1830). Cell body is an elongate cylinder with a sharply pointed posterior end. The flagellum is about one-fourth the body length; Delicate pellicular striations are difficult to see without DIC. The small discoid chloroplasts are numerous. Paramylon bodies are rod-shaped. The nucleus is central. The stigma is prominent. Moves sluggishly among debris. Collected from a freshwater pond near Boise, Idaho. September 2006.DIC