Nerve and glial cells in fruit fly embryo. Glial cells (stained green) in a fruit fly developing embryo have survived thanks to a signaling pathway initiated by neighboring nerve cells (stained red).

Anterior and posterior regions of a C. elegans embryo are determined by PAR protein distribution. PAR-2, shown in green marks the posterior region of the embryo and PAR-6, shown in red, marks the ante...

Time series of images of fertilized Xenopus laevis embryos with their vitellin membrane removed. Embryos were incubated plus/minus the actin depolymerizer cytochalsin B.

Time series of images of fertilized Xenopus laevis embryos with their vitellin membrane removed. Embryos were incubated plus/minus the actin depolymerizer cytochalsin B.

Confocal z-stack of a dividing zebrafish embryo. The fixed embryo is visualized using EMTB-3GFP (microtubules-marker - green), phalloidin (actin marker -red) and Hoechst (DNA marker - blue).

4D video of zebrafish embryo mitosis and cytokinesis. This time lapse video of z-series images was taken of a zebrafish embryo expressing EMTB-3XGFP (a microtubule marker) taken shortly after fertil...

Anterior and posterior regions of a C. elegans embryo are determined by PAR protein distribution. PAR-2, shown in green marks the posterior region of the embryo and PAR-6, shown in red, marks the ante...

Anterior and posterior regions of a C. elegans embryo are determined by PAR protein distribution. PAR-2, shown in green marks the posterior region of the embryo and PAR-6, shown in red, marks the ante...

Zebrafish embryo at 75% epiboly. The view is from the animal pole. The focal plane is deep within the blastoderm. The focal plane changes as the embryo rolls during the sequence. The fluorescent lipid...

A human sixteen-cell embryo, also called a morula (latin for mulberry). The embryo has gone through four cycles of cell division to get to this stage and the cells have undergone compaction whereby th...