Lamellae of cytopharynx in the opisthe of a dividing cell. This cytopharynx is not yet functional and lacks most of the medium dense vesicles that accumulate between the lamellae. Toxicysts are presen...

A high resolution tangential view of the surface of a non-dividing cell shows several ribbons of microtubules between the alveolar sac and the epiplasm. The thick fibrous layer associated with the epi...

Didinium nasutum. A tangential view of the surface of a non-dividing cell shows several ribbons of microtubules between the alveolar sac and the epiplasm. The thick fibrous layer associated with the e...

High resolution image of microtubules that sometimes extend deep into the cytosol from the basal bodies. They serve to guide the trichocysts to their docking sites at the plasma membrane (see Plattner...

Didinium (non-dividing) has a massive cytopharynx at its anterior end that takes the shape of a cone-shaped proboscis when closed. This cytopharynx contains numerous lamellae composed of sets of micro...

In this colchicine-treated cell, used in an attempt to disrupt its microtubules, we found that microtubules already formed are not disrupted in Paramecium. This open cytoproct shows the microfilaments...

High resolution view of the contractile vacuole pore encircled on its cytosolic surface with microtubules. Other microtubules arise from these encircling microtubules and extend far out into the cell ...

Lamellae of cytopharynx in the opisthe of a dividing cell. This cytopharynx is not yet functional and lacks most of the medium dense vesicles that accumulate between the lamellae. Toxicysts are presen...

A tangential section through the cell’s surface show the pairs of basal bodies in cross section. The ends of kinetodesmal fibers point anteriorly in the cell, the postciliary ribbons arise from the ...

High resolution image of Didinium (non-dividing) has a massive cytopharynx at its anterior end that takes the shape of a cone-shaped proboscis when closed. This cytopharynx contains numerous lamellae ...