High resolution image of the collecting canal of the contractile vacuole complex. Normally the collecting canal is expanded when the CV is in systole. In this micrograph the collecting canal is empty ...

The 11 micrographs of the group are views of a serially-sectioned contracted Vorticella convallaria cell that show the main features of this cell. This figure shows 3 food vacuoles; 2 segments of the ...

The 11 micrographs of the group are views of a serially-sectioned contracted Vorticella convallaria cell that show the main features of this cell. This figure shows the edge of last food vacuole in se...

The contractile vacuole of V. convallaria empties into a convoluted chamber. This chamber is covered by the alveoli and plasma membrane of the pellicle and is open to the cell’s surface via the peri...

An overview of the peristome of Opercularia coarctata. The corrugated wall, the equivalent to the ribbed wall of Paramecium, contains tubular projections of alveoli and cross sections of two ribbons o...

Euplotes sp. (eurystomus ?) is a hypotrich. This ciliate has a few rows of dorsal cilia as well as specialized clumps of cilia called cirri on its ventral side and a complex of membranelles involved i...

Radial arm of the contractile vacuole complex displaying two rows of openings from the smooth spongiome into the collecting canal. Two microtubules separate the two rows of openings. The smooth spongi...

Cross section through a radial arm of the contractile vacuole complex. The collecting canal occupies the center of the arm whose membrane is supported by the radial microtubular ribbon which has now d...

The spongiome of membranes that surround the CV are probably not preserved in their native state when collidine buffered fixative is used. However, suggestions of decorated tubules as well as smooth t...

Euplotes sp. (eurystomus ?) is a hypotrich. This ciliate has a few rows of dorsal cilia as well as specialized clumps of cilia called cirri on its ventral side and a complex of membranelles involved i...