Nomarski differential interference contrast image of Eudorina. Eudorina consist of either 16, 32 or 64 (mostly 32) cells embedded in a spherical mass of gelatinous material. Each cell contains a chlo...

This image shows human cardiac microvascular endothelial cells forming tubes in Matrigel. Matrigel is a gelatinous protein mixture that encourages cells to demonstrate complex cellular behavior that i...

Living Licmophora juergensii on red alga (Rhodophyta), together with the diatom Cocconeis and filamentous cyanobacterial colonies. Licmophora cells can move to locate a place with suitable light expos...

Differential interference contrast image of Closterium costatum, a unicellar desmid. Every binary fission creates a cross line on the cell wall. The single cross line seen here indicates that this cel...

Photomicrograph of arranged diatom valves from Didymosphenia geminata (Lyngbye) Schmidt collected alive in the Clark Fork River in Missoula, Montana, then cleaned and mounted by the photographer. This...

Short timelapse movie of prechordal plate, hypoblast, and yolk syncytial layer (YSL) nuclear movements during 80-90% epiboly. The prechordal plate and notochord can be seen as a tighter clump of cells...

The movie illustrates two approaches to understanding the 3D structure of complex objects, using the pluteus stage embryo of the sea urchin Arbacia punctulata. The first sequence is a through-focus DI...

The video shows a cytoplast that is adhering to a sub-stratum in its central portion. It is also connected by a retraction fiber to its central cell. The cytoplast is engaging in vigorous protrusive a...

The video shows epidermal cells at the edge of an epithelial sheet in culture. There is vigorous lamellipodial activity at the edge of the cell cluster. Lysosomes and elongated mitochondrial are seen ...

Phagocytosis of injected live E. coli and B. subtilis by early macrophages in the yolksac blood circulation valley; real time. A macrophage loaded with B. subtilis bacteria now phagocytoses an erythro...