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...

Higher magnification of acidosomes docked at the nascent digestive vacuole membrane. The E-fracture face is relatively IMP free while the P-fracture face has many large IMPs as well as some sizable pi...

Quick-freeze deep-etch of acidosomes show the results of carrier vesicle fusion with the acidosomes. Both the E-face and P-face of the acidosomes appear to have two areas, the larger area on the E-fac...

Quick-freeze deep-etch of acidosomes show the results of carrier vesicle fusion with the acidosomes. Both the E-face and P-face of the acidosomes appear to have two areas, the larger area on the E-fac...

By 5-8 minutes the membrane of the DV uniformly labels with the mAb to the L1 antigen that is specific for acidosomes and phagoacidosome (DV-II) membrane. An unlabeled lysosome lies next to the DV-II....

Sections show the origin of one cytopharyngeal ribbon of 12 microtubules from the nodes and show the tight curve the ribbon follows over the cytostomal cord. These ribbons move discoidal vesicles, aci...

Sections show the origin of one cytopharyngeal ribbon of 12 microtubules from the nodes and show the tight curve the ribbon follows over the cytostomal cord. These ribbons move discoidal vesicles, aci...

Higher magnification of acidosomes docked at the nascent digestive vacuole membrane. The E-fracture face is relatively IMP free while the P-fracture face has many large IMPs as well as some sizable pi...