Scanning electron micrograph showing tentacles on the head of a Hydra viridis. Epithelial cells located at the base of the tentacle are in a flat, contracted state. Cell distal to the head of the H. v...

Transmission EM showing adherens junctions between cells of the enveloping layer of a 24 hr (prim-5) Zebrafish embryo. Specimens fixed in Karnofsky's (overnight at 4˚C) followed by postfixing in 4% ...

Shown are a normal human fibroblasts stained for lamin A (red), a major component of the nuclear lamina. Other images in this group show the envelope abnormalities that occur in HGPS patients carryin...

Figure 263 from Chapter 8 (Lysosomes) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Portion of a cell from hamster suprarenal cortex with clustered lysosomes near the Golgi complex. A PDF copy of th...

Actin fiber organization in primary keratinocyte. There are numerous actin arcs around the periphery of the cell and actin bundles that terminate in focal adhesions (bright structures perpendicular t...

Transmission electron micrograph of exocytosis in a guinea pig pancreas. Image made available by James D. Jamieson and the Department of Cell Biology, Yale University School of Medicine.

Transmission electron micrograph of exocytosis in a guinea pig pancreas. Image made available by James D. Jamieson and the Department of Cell Biology, Yale University School of Medicine.

Transmission electron micrograph of a microvilli at the apex of a mouse intestine. Image made available by James D. Jamieson and the Department of Cell Biology, Yale University School of Medicine.

Transmission electron micrograph of the junctional complexes at the intersection of three hepatocytes. This image was taken from liver tissues from an ethanol fed rat and also shows the bile canalic...

Transmission electron micrograph of liver from a 1-day old rat showing mitochondria, rough endoplasmic reticulum and rosettes of glycogen granules. Image made available by James D. Jamieson and the De...