A view of the cytopharynx and its nascent food vacuole forming region. The flattened pharyngeal vesicles that may contain monolayers or bilayers of lipids seem to be equivalent to the discoidal vesicl...

The top of the cytopharyngeal basket showing a closed cytostome where food will be engulfed. In the lab Nassula was fed Phormidium inundatum, a cyanobacterium. Ingested food is seen in food vacuoles a...

A high resolution view of the tubulated CV membrane attached to ampullae 2, 3, 4 and 5 of the CVC. The tubules lie against the ribbon of microtubules as well as form a large mat lying inward (centrifi...

Food vacuole of Didinium. The food vacuole contains both exploded and unexploded trichocysts of Paramecium. Further details available at Wessenberg, H. and Antipa, G. 1968. Studies on Didinium nasutum...

Cortex and cytoplasm of Didinium. This cell cortex image includes the extrusive organelles mucocysts involved in cyst formation and one cyrtocyst of unknown function. Also, a few ciliated basal bodies...

Cortex and food vacuole of Didinium. The food vacuole contains unexploded trichocysts of Paramecium. Further details available at Wessenberg, H. and Antipa, G. 1968. Studies on Didinium nasutum. I. St...

This section of Conchophthirus is at the edge of the cortex showing the striated fibers and microtubules that attach to ciliated basal bodies. In particular, enlarged glancing longitudinal views of bo...

A high resolution image of the base of a dikinetid deeper in the cell. A postciliary ribbon and other microtubules fan out from it's basal bodies. TEM taken on 6/3/69 by R. Allen with Philips 300 oper...

High resolution micrograph through an oblique section of the cortex of Coleps showing many ribosomes, ordered into whorls and spirals, collectively called polysomes, on the surface of the rough endopl...

A high resolution 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 m...