in vivo;left lateral view

Description:

Portrait of the common marine scuticociliate, Uronema marinum (DUJARDIN,1841). The large spherical macronucleus (MN) is just anterior to the cell center. The oral apperatus is indicated by the yellow arrowhead. The small subterminal contractile vacuole is indicated by the green arrowhead. A food vacuole is indicated by the red arrowhead. The long terminal cilium is indicated by the light blue arrowhead. Collected from effluent of the protein skimmer of a commercial marine aquarium in Boise, Idaho. January 2007. DIC.