A layer of mucocysts is docked under the pellicle. The pellicle has a plasma membrane and an alveolar sac system. Both basal bodies of a dikinetid are ciliated, and the food vacuoles are plentiful and...

This group represents a serial series of sections. At the level of this section the funnel shaped oral region is now reduced to a narrow cytopharyngeal tube extending toward the aboral region of the c...

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...

A freeze-fracture image of a DV-II transforming into a DV-III by rapid fusion of lysosomes with its membrane. The P-face shown here of the early DV-III has abundant IMPs as well as many inward blebs (...

Detail of fractured early Digestion Vacuole-III membrane showing the many IMPs on the P-fracture faces of the lysosomal membranes that had just fused with the DV. The membrane will smooth out as the p...

11 micrographs are views of a serially-sectioned contracted Vorticella convallaria cell that show the main features of this cell. This figure shows 5 food vacuoles; 3 segments of the macronucleus; per...

Grazing section through an accumulation of uncoated cupulas in the process of attachment to and fusion with a food vacuole membrane. The small round pores apparently represent early stages of fusion o...

A view of the cytoplasm of a green Trichodina that lives on the surface of a freshwater snail collected in central Illinois. In this view the 10 endosymbiotic bacteria are evident as well as an endosy...

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...

11 micrographs of views of a serially-sectioned contracted Vorticella convallaria cell that show the main features of this cell. This figure shows 5 food vacuoles and the edges of 2 more. The connecti...