Two of the three types of vesicles that are transported to the cytopharynx and that accumulate in large numbers at the cytopharynx are shown in this electron micrograph. The discoidal vesicles move up...

Immunogold label specific for Q2 antigen on discoidal vesicles. The same mAb used in CIL:36721 heavily labels discoidal vesicles and less heavily the cytopharyngeal membrane. A few gold particles are ...

Detail of acidosome docking sites at DV-IA planar view through the site where acidosomes are docked and/or fusing with a DV-I. These sites are labeled for the mAb specific for antigen L1. TEM taken on...

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 4 food vacuoles, 3 segments of the macronucleus, peri...

Monoclonal antibody, E30-2-1, was raised to antigen D6 that specifically labels acidosomes and DV-II. There was no label on the nascent vacuole membrane or ciliary membranes. This cell had been incuba...

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, 3 segments of the macronucleus, peri...

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; 3 segments of the macronucleus; peri...

Monoclonal antibody, E30-2-1, was raised to antigen D6 that specifically labels acidosomes and DV-II. There was no label on the nascent vacuole membrane or ciliary membranes. This cell had been incuba...

At the same time that the acidosomes fuse with the phagosome, the DV-I membrane, that originated from the discoidal vesicles, is transformed into tubules that are removed from the phagosome. By this p...