P. multimicronucleatum in defecation. When a spent vacuole has fused with the single membrane along the midline of the ridge the lips of the cytoproct...

High resolution image of the somatic basal bodies along the sides of the cytoproct ridge have bundles of microtubules extending into the endoplasm from...

A high resolution micrograph showing four parasomal sacs in longitudinal section each at the base of a surface depression. Trichocysts extend into each...

High resolution micrograph following trifluoperizine (TFP) treatment, which apparently does not inhibit endocytosis but does inhibit movement of vesicles...

In defecation, when a spent vacuole has fused with the single membrane along the midline of the ridge the lips of the cytoproct split apart and form...

The somatic basal bodies along the sides of the cytoproct ridge have bundles of microtubules extending into the endoplasm from near their proximal ends...

Cross sections of basal bodies at the level of their attachments to the kinetodesmal fiber, the anterior basal body is attached by a thin bridge. The...

A tangential section of basal body pair (dikinetid) showing a connecting fiber linking the BBs as well as attachments to a kinetodesmal fiber, to postciliary...

The proximal end of the basal body is sometimes the origin of other single microtubules or bundles of microtubules that extend deeper into the cell...

Cortex and cytoplasm of Didinium. This cell cortex image includes the extrusive organelles mucocysts involved in cyst formation and one cyrtocyst of...