Didinium captures Paramecium. Paramecium is almost completely ingested and the proboscis is beginning to reform. This micrograph was taken in 1968 by G. Antipa on a Cambridge Mark IIA operating at 20k...

Didinium captures Paramecium. After reeling in the prey with cyclosis tugging at the attached toxicysts the proboscis opens to engage the Paramecium. This micrograph was taken in 1968 by G. Antipa on ...

Didinium captures Paramecium. At midingestion and showing metachronous waves of cilia within the two characteristic ciliary girdles of Didinium nasutum. This micrograph was taken in 1968 by G. Antipa ...

Toxicysts in the cytoplasm of cross sectioned non-dividing Didinium. Toxicysts (extrusomes) are multilayered cylinders that are discharged from the cytopharynx region during capture of prey such as Pa...

The ingestion of Paramecium by Didinium. This micrograph also clearly shows the five short rows of clavate cilia (ciliary stubs without central microtubules) that reside just below the anterior and po...

Didinium captures Paramecium. Also showing metachronous waves of cilia in the two characteristic ciliary girdles of Didinium nasutum. This micrograph was taken in 1968 by G. Antipa on a Cambridge Mar...

A high resolution image of the pellicle of Didinium, in cross section of a non-dividing cell, has a plasma membrane with a distinct glycocalyx on its external surface and a flattened alveolar sac syst...

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

The contractile vacuole and cortex of Didinium nasutum showing an extrusive organelle (cyrtocyst) of unknown function. Further details available at Wessenberg, H. and Antipa, G. 1968. Studies on Didin...

Apical oral view of Didinium. Showing the proboscis containing extrusive organelles to demobilize and eventually engulph it's prey. Metachronous waves of cilia in the anterior girdle of the two charac...