11 micrographs of views of a serially-sectioned contracted Vorticella convallaria cell that show the main features of this cell. This figure shows 4 food vacuoles. The helically contracted stalk is se...

Like other ciliates two types of nuclei are present. A germinative micronucleus and a RNA-producing macronucleus. Both have nuclear envelopes with pores and both have ribosomes attached to their outer...

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...

Fibers that splay out from a mid piece pass to the pellicle. TEM taken on 4/5/71 by R. Allen with Hitachi HU11A operating at 75kV. Neg. 10,250X. Bar = 1µm. Published and adapted with permission from ...

The spasmoneme contains membranous tubules that are known to store calcium (see Favard, P. and N. Carasso, J. Microscopie 3:671-696, 1964) and to be modified ER. The alveoli only partially surround th...

Fibers that splay out from a mid piece pass to the pellicle. TEM taken on 4/5/71 by R. Allen with Hitachi HU11A operating at 75kV. Neg. 10,250X. Published and adapted with permission from J. Cell Biol...

11 micrographs are views of a serially-sectioned contracted Vorticella convallaria cell that show the main features of this cell. This figure shows 3 food vacuoles (of a total of about 15 in the cell...

Mitochondria of Vorticella convallaria like other ciliates, have tubular cristae arising from their inner membranes. However, they also have a bundle of filaments (DNA?) that extend through the center...

The pellicular pore consists of the invaginated plasma membrane that penetrates the alveolus as well as the epiplasm and ends as a clathrin-coated pit. TEM taken on 3/14/72 by R. Allen with Hitachi HU...

Accumulation of golgi cupulas near a food vacuole. The food vacuole shown has already fused with many vesicles that have already added their membrane as well as their dense inner lining to the vacuole...