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...

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...

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...

V. convallaria preserved in collidine buffered fixative (not cacodylate) has a less dense cytoplasm in which oranelles are easier to recognize. The rough ER has vesiculated but this vesiculation enhan...

The cytoproct is the cell’s defecation site where spent digestive vacuoles fuse with the plasma membrane. In this cell the cytoproct is closed and forms a ridge along the posterior suture on the ven...

Acid phosphatase is present in tubules retrieved from late DV-III. The tubules and rounded expansions arising as a result of late DV-III membrane retrieval contain an electron-opaque reaction product ...

In some cells exposed to horseradish peroxidase (HRP) for 30 sec and then immediately fixed some HRP has already entered the cell by endocytosis and has been removed from the early endosomes in carrie...

In order to study all stages of DVs in the same cell we used a protocol of sequentially exposing cells to different sizes of latex beads interspersed with washes: for example, 3 minutes in 0.1µm bead...

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...

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...