In this micrograph of a developing organelle, the trichocyst membrane is intact but does not bear the glycocalyx seen on the luminal side of the lysosomal membrane that lies nearby. The flocculant mat...

Acid phosphatase is synthesized in the biosynthetic pathway in the ER and packaged in the TGN into primary lysosomes which are passed on to secondary lysosomes. Primary lysosomes are small vesicles of...

Secondary lysosomes in quick-freeze deep-etch images lie against the smooth E-face of a phagoacidosome (DV-II) membrane. The P-fracture face of one fairly large lysosome lies close to the DV-II but no...

Secondary lysosomes contain a fairly dense matrix in well fixed cells. The content of these lysosomes seems to be released as a package into the phagoacidosome when they fuse to form the phagolysosome...

The carrier vesicles dock with the acidosomes and then fuse with these larger vesicles before or as the vesicles dock at the nascent Digestive Vacuole. Thus the contents of the carrier vesicles are fi...

The carrier vesicles dock with the acidosomes and then fuse with these larger vesicles before or as the vesicles dock at the nascent Digestive Vacuole. Thus the contents of the carrier vesicles are fi...

Phagoacidosomes are heavily labeled for L1 antigen in 5-8 to 15-18 minute-old DVs. However, only some DVs at 15-18 min still had L1 label. Only occasionally did we see tubules with label arising from ...

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; micronucleus; contr...

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; micronucleus; contr...

This micrograph shows a crystal surrounded with secondary lysosomes. This was taken from a cell returned to growth medium following starvation for several days (0 day of rejuvenation). This could repr...