The transition from 3 to 2 rows of cilia can be seen in this view of the AZM. TEM taken on 7/24/67 by R. Allen with Philips 200 operating at 60kV. Neg. 1,370X. Bar = 5µm. Standard glutaraldehyde fix...

The membranelles of the AZM extending from the ventral side of the oral cavity are largely composed of 2 rows of cilia. A dikinetid of the somatic surface is also present. This dikinetid also has pigm...

The accessory microtubules at the proximal ends of the polykinetids, both in cross section and tangential section, are highlighted at higher magnification. This section shows one parasomal sac as well...

The new oral region in the opisthe starts to form as an unorganized field of new basal bodies develops at the equator of the cell surface. At first these do not resemble membranelles although some bas...

A more extensive freeze-fracture view of the membranelles on the left side of the buccal cavity. Fractures of eighty or more basal bodies can be counted in each of the dorsal three rows of the dorsal ...

What is the filamentous reticulum? When exposed in planar view lying under the ribbed wall, the filamentous reticulum is seen to be composed of a sheet of mutiple interdigitating rows of nodes separat...

The anterior end of Euplotes tilts upward and contains triplet rows of cilia which are elements of the AZM. Ridges between the membranelles of the AZM contain mitochondria and electron transparent ves...

At this level of the buccal cavity the opening into the cytopharynx is not seen. Pharyngeal vesicles accumulate at the ends of the cytopharyngeal lamellae and are present under the basal bodies of the...

Carrier vesicles are around 100nm in diameter. They can carpet the cytopharyngeal ribbons with a layer of vesicles, several vesicles wide, as shown in this micrograph. As seen here the ribbons come to...

Posterior end of the buccal cavity with a nascent phagosome attached to the cytopharynx. The ribbed wall has ended and the cytopharynx is greatly reduced. The quadrulus goes to the end of the buccal c...