A high resolution image of a dikinetid in cross section near its proximal end. A postciliary ribbon and a transverse ribbon are seen. A short kinetodesmal fiber buds from the side of the kinetid. Coat...

A high resolution micrograph showing the striated kinetodesmal fiber extending to the pellicle from the basal body where it terminates against the epiplasm. A bundle of microtubules extends into the c...

High resolution image of the nucleoli of the macronucleus. Nucleoli have a core of DNA that contains the genes that are transcribed into ribosomal RNA. Assembly of the ribosomal subunits from this pro...

Mucocysts have a herringbone pattern of subunits and are surrounded by a membrane that fuses with the plasma membrane. When the mucocyst content is extruded the content expands (see Hausmann, Protisto...

A High resolution micrograph of tetrahymena showing a transverse ribbon starting from the anterior right side of the proximal end of a basal body (out of section plane) and crossing under the pellicle...

A tangential section through the buccal cavity showing the close spacing of the cilia in the undulating membrane and 3, presumably nonciliated basal bodies, in the inside row. Accessory microtubular r...

A view of the cortex showing early endosomes are often cup shaped and can have several coated evaginations arising from the rim of the cup. TEM taken on 8/10/65 by R. Allen with RCA EMU3F operating at...

Polykinetids of one membranelle of the buccal cavity, probably membranelle 1. Accessory microtubules arise from the row of basal bodies on one side. Parasomal sacs are not seen associated with this me...

The scopula, stalk-forming region, is outlined by a circle of basal bodies that produce short modified cilia. Other basal bodies lie within this circle. The sheath is secreted outside the circle of ci...

Mitochondria of Vorticella convallaria like other ciliates, have tubular cristae arising from their inner membranes. However, they also have a bundle of filaments (DNA?) that extend through the center...