The linkage complex consists of a spindle shaped mid piece bordered, in one plane, by several rails that have subunits that pass through the ER membrane. Thin filaments splay out from both tips of the...

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...

The contractile vacuole pore is supported on its cytosolic side by a coil of microtubules and other microtubules extend from the pore to the CV membrane. The plasma membrane and CV membrane cover the ...

The ER tubules in the spasmoneme bear elements of the linkage complex, both the mid piece and rails. These elements are more disperse than in the body of the cell. The fibers from the mid piece pass i...

At its most distal extremity the stalk ends in a clump of sheath-like fibers with embedded bacteria. The spasmoneme itself seems to end in a tight association with its surrounding plasma membrane. Thi...

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...

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 1 food vacuole; a segment of the ma...

Only the macronucleus contains nucleoli which is the site of ribosomal RNA synthesis and ribosome subunit assembly. This EM also contains the distal end of the food vacuole forming cytopharynx which c...

Food vacuoles arise from the single membrane that lines the cytopharynx. Vesicles, similar to discoidal vesicles, attach to the cytopharyngeal microtubules (lamellar clumps) that arise from the dorsal...

The contractile vacuole pore is supported on its cytosolic side by a coil of microtubules and other microtubules extend from the pore to the CV membrane. The plasma membrane and CV membrane cover the ...