Stacks of 4 or 5 kinetodesmal fibers occupy the longitudinal ridges in a cross-sectioned cell. The kds lie along the right side of each ridge (cell’s left side), and as the kds are tapered, the smal...

Scanning electron microscope image of Strongylocentrotus drobachiensus [sea urchin] at the gastrula stage. Embryo was split open to reveal a nice cross-section through the outer epithelial layer and t...

Colpoda is a soil ciliate and this micrograph is characterized by numerous mucocysts and food vacuoles containing bacteria in various stages of digestion. This electron micrograph is near the posterio...

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...

The largest accumulation of endosomal vesicles and early endosomes is next to the buccal cavity area under the membranelles of the peniculi and quadrulus. Cilia of the peniculi have a very close packi...

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...

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...

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...

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...

Scanning electron microscope image of Strongylocentrotus drobachiensus [sea urchin] embryo at the late gastrula stage. Embryo was cut to reveal blastocoel cavity. The fertilization envelope dissolves ...