This micrograph shows that the discoidal vesicles meet the cytopharyngeal membrane edge-on where they fuse. Besides the ribbon of 12 microtubules abutting the membrane there is a second small ribbon o...

The cytosol of Paramecium contains many vesicles of various sizes, shapes and contents as well as complex particles such as ribosomes and glycogen granules. The rough endoplasmic reticulum exists as m...

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...

Immunofluorescent pictures of Tetrahymena labeled with an antibody to the V-ATPase of Dictyostelium discoideum provided by Dr. T. L. Steck, University of Chicago. a. This polyclonal antibody was the s...

A grazing section through the dorsal surface of Euplotes showing cross sections of cilia in four of the sparsely ciliated kineties . A layer of mitochondria underlies the pellicle. A replication band ...

This section is cut at a level where the macronucleus is folded so it appears to be in 2 parts and where the micronucleus is visible. Contractile vacuole, perioral kinetids, and the peristome is evide...

Detail of spongiome of CV. The tubular network is continuous with the filling CV at numerous points. Some spongiome tubules my be decorated with V-ATPases. TEM taken on 3/27/69 by R. Allen with Philip...

An image of the contractile vacuole in diastole (filling phase). Decorated spongiome surrounds the CV. The macronucleus, micronucleus, cytopharynx, and basal bodies of perioral membranelle are include...

DVD quality video of the Contractile Vacuole Complex of Paramecium multimicronucleatum. Measuring membrane tension of the in vitro CV. To measure the build up of tension by the CV membrane an in vitro...

Portion of a proximal convoluted tubule from a rat kidney with experimental hemoglobinuria. A mass of dense hemoglobin completely fills the tubule lumen and outlines the microvilli of the brush border...