Paramecium multimicronucleatum is covered with cilia which cilia arise from regular surface depressions roughly rectangular in shape. This image is adapted with permission from Fig. 1 in J. Cell Biol....

A glancing view of the cortex of Conchophthirus reveals details of cortical structure. This includes the nature of the cell membrane and the alveolar membranes that reside immediately below the surfac...

A high resolution image that shows a dikinetid which is set in a shallow basin in the cell surface. The pair of basal bodies have a proximal cartwheel and a dense septum (not found in most bbs) just d...

High resolution image showing that one parasomal sac lies anterior to each basal body of the somatic ciliature. A parasomal sac is an indentation of the plasma membrane that penetrates into the cytoso...

A cross-section and tangential views of three other linkage complexes. The mid piece sits in an indentation of the ER membrane on a bed of 5 slats that pass through the membrane. Rails affix the ER me...

11 micrographs are views of a serially-sectioned contracted Vorticella convallaria cell that show the main features of this cell. This figure shows 4 food vacuoles; 3 segments of macronucleus; cytopha...

Cross sections of striated bands and infraciliary lattice arms. Filaments of the striated bands are less densely packed than the infraciliary lattice. Kinetodesmal fibers and postciliary microtubules ...

A cross-section and tangential views of three other linkage complexes. The mid piece sits in an indentation of the ER membrane on a bed of 5 slats that pass through the membrane. Rails affix the ER me...

Receptor mediated endocytosis is a process in which extracellular molecules are taken into the cell via coated vesicles that pinch from the plasma membrane. In Paramecium the resulting vesicles fuse w...

The cytoproct is the cell’s defecation site where spent digestive vacuoles fuse with the plasma membrane. In this cell the cytoproct is closed and forms a ridge along the posterior suture on the ven...