A freeze-fractured view of the nuclear envelope. The fracture in the middle of the figure exposes the cytosolic facing membrane. This can be distinguished by a fractured cytoplasmic organelle at the t...

High resolution transmission electron micrograph of Halteria showing both the large macronucleus with nuclear pores, dense heterochromatin bodies and nucleolus, and the small micronucleus.

High resolution image of elements of myonemal fibers which lie next to the epiplasm that lies internal to the plasma membrane and alveoli. A close association of the ER with the myonemes is seen. The ...

PrA contains a distinct determinant for glycan-independent ERAD (ER associated degradation). A mutant of the vacuolar proteinase A (PrA*-Gldelta4) (green) is a substrate of ER quality control (ERQC) m...

In one experiment in which electric shock was applied to Paramecium cells to trigger trichocyst discharge the macronucleus in one cell was observed to undergo morphological changes of two types. First...

Sub-confluent, interphase Human Umbilical Vein Endothelial Cells (HUVECs) transfected with GFP-WT-MCAK (Mitotic Centromere Associated Kinesin) and grown in culture for 8 hours. Cells were fixed in PH...

Image of the pellicle of Opercularia coarctata. Indentations of the plasma membrane penetrate the alveolar membranes end as coated pits. These pits are also known as pellicular pores are homologous to...

Protein translocation is the process by which peptides are transported across a membrane bilayer. Translocation of proteins across the membrane of the endoplasmic reticulum (ER) is know to occur in on...

Protein translocation is the process by which peptides are transported across a membrane bilayer. Translocation of proteins across the membrane of the endoplasmic reticulum (ER) is know to occur in on...

Mitochondria in HeLa cells are identified by mito-YFP (green) following treatment with the mitochondrial depolarizing agent CCCP (carbonyl cyanide m-chlorophenyl hydrazone). When fixed cells are perme...