Developing fruit fly nerve cord. The glial cells (black dots) and nerve cells (brown bands) in this developing fruit fly nerve cord formed normally despite the absence of the SPITZ protein, which bloc...

Confocal micrograph showing the connections of the visual system in a four-day-old zebrafish embryo. Staining of the neurons, glia and optic nerve illustrate the connections between the retina and the...

Confocal micrograph of an intact Drosophila larva imaged through the translucent cuticle showing the innervation of the dorsal (towards the back) muscle fibres by motor nerves. The muscles have been g...

The developing wing bud of a four day chick embryo showing the pattern of spinal nerves growing into it. The nerves are made visible by staining a specific neural protein (3AIO monoclonal antibody, wh...