An image of one of several contractile vacuole pores of the proter of a dividing cell. This is presumably at an early stage of development as division is not yet complete. This section shows the pore ...

Another view of the cytopharynx but in a dividing Didinium. This cytopharynx is in the proter (anterior) daughter cell. The lamellae, each consisting of a set of perpendicularly arranged microtubules ...

Contractile vacuole in the opisthe of a dividing cell. This is presumably the mature CV of the original “mother” cell. Spongiome tubules form large regions of additional membrane on two sides of t...

A transverse section near the tip of the oral proboscis of Didinium. This micrograph shows the extrusive organelles of the mucocysts adjacent to the plasma membrane, the toxicysts in a circular ring a...

The aboral view of Didinium showing seven contractile vacuole pores for it's single posterior contractile vacuole and metachronous waves of cilia in one of the two characteristic ciliary girdles of Di...

A high resolution micrograph of the locomotor cortex of Didinium. A longitudinal section reveals the basal bodies and the axonemes of cilia as they emerge from the cell cortex of Didinium. Bundles of ...

High resolution image of one of several contractile vacuole pores of the proter of a dividing cell. This is presumably at an early stage of development as division is not yet complete. This section sh...

An image of the fibrous cortex of Didinium nasutum. Embedded within the fibrous layer are many extrusive organelles, called mucocysts, involved in cyst formation. In this view there is also a longitud...

Toxicysts, extrusive organelles, (sometimes called extrusomes in protistan lingo) in the proter (or anterior daughter) of a dividing cell. Toxicysts can be very long and are aligned along microtubular...

Didinium has two bands of ciliated basal bodies that encircle the cell, one adorally and one aborally. The bands are composed of groups of approximately 15 ciliated basal bodies. This section is a lon...