Movie showing human stem cell colony migration.

Scanning electron micrograph of coralline algae. Coralline algae are characterized by a thallus that is hard because of calcareous deposits contained within the cell walls.

Chicken basilar papilla (cochlea) hair bundles imaged with field-emission scanning electron microscope.

Scanning electron micrograph of a fragment of surface of diatom cell. Diatoms have a silica cell wall also called a frustule that has regularly repeating features.

Transmission electron microscope image of T4Phage, a bacteriophage that infects Escherichia coli bacteria. This image is part of an image group (CIL:41124-41131).

Scanning electron microscope image of Penta lanceolata anther (pollen bearing part of stamen).

Scanning electron microscope image of Penta lanceolata anther (pollen bearing part of the stamen).

Scanning electron microscope image of Penta lanceolata anther, with unacetolyzed pollen on the surface.

Individual deep cell moving by circus movements. Fundulus heteroclitus(killifish) embryo injected with GFP-actin plasmid at 1-cell stage, filmed during gastrulation. Image made available through Zebra...

Individual deep cell moving by circus movements. Fundulus heteroclitus(killifish) embryo. Images made available through Mark Cooper and Zebrafish The Living Laboratory.