In a 9-day old culture of stationary phase cells, two or three days post-conjugation, remnants of the previous macronucleus could be found near normal macronuclear bodies. This remnant was identified ...

11 micrographs of views of a serially-sectioned contracted Vorticella convallaria cell that show the main features of this cell. This figure shows 5 food vacuoles and the edges of 2 more. The connecti...

Vorticella convallaria has a contractile stalk that arises from the aboral pole of the cell. The myonemes from the body converge at this pole and pass into the stalk to form a large contractile bundle...

Opercularia coarctata. Transmission electron micrograph of contracted cell body. This ciliate does not have rows of basal body/cilia over its whole surface but has cilia in the oral region and in a tr...

Opercularia is named for a ciliated flap (operculum) that is adoral to the opening to the oral region. However, this operculum is pulled back into the body when the myonemes are fully contracted as in...