Cilia arise out of shallow depressions in the cell surface. Accessory microtubules, the transverse microtubules and postciliary microtubules splay out from the sides of the basal bodies of a dikinetid...

A micrograph showing the partially open cytoproct of Colpoda cucullus. The alveoli stop at the edges of the cytoproct and filamentous material (actin?) coats the inside of the single membrane that cov...

Detail of CV pore. Microtubules encircle the pore wall and other microtubules radiate out from the pore toward the CV membrane. TEM taken on 3/27/69 by R. Allen with Philips 300 operating at 60kV. Neg...

This section represents one in a series of serial sections. At this point the two parts of the macronucleus are now connected by a DNA replication band similar to the hypotrichs (e.g. Euplotes). The l...

The contractile vacuole may evacuate through a CV pore located in an indentation of the pellicle not far from the adoral end. TEM taken on 3/18/71 by R. Allen with Hitachi HU11A operating at 75kV. Neg...

This group represents a serial series of sections. At the level of this section, numerous food vacuoles, only three cross sectioned cilia remain of the perioral ciliature. TEM taken on 3/12/71 by R. A...

The cytosol contains numerous vacuoles as well as symbiotic bacteria (see Heckmann, Int. Rev. Cytol. 14(suppl.):111-143, 1983 for a discussion of symbiotic bacteria in Euplotes). TEM taken on 7/24/67 ...

In Euplotes a replication band of the macronucleus has larger heterochromatin masses on one side of the band after DNA replication has occurred. The replication band moves in the direction of lighter...