Synapse formation in cultured hippocampal neurons after 7 days in vitro. Cells were immunostained for MAP2, a microtubule associated protein localized to dendrites but not axons (green), and synapsin...

Synapse formation in cultured hippocampal neurons after 7 days in vitro. Cells were immunostained for MAP2, a microtubule associated protein localized to dendrites but not axons (green), and synapsin...

Synapse formation in cultured hippocampal neurons after 7 days in vitro. Cells were immunostained for MAP2, a microtubule associated protein localized to dendrites but not axons (green), and synapsin...

Synapse formation in cultured hippocampal neurons after 7 days in vitro. Cells were immunostained for MAP2, a microtubule associated protein localized to dendrites but not axons (green), and synapsin...

Synapse formation in cultured hippocampal neurons after 7 days in vitro. Cells were immunostained for MAP2, a microtubule associated protein localized to dendrites but not axons (green), and synapsin...

Dorsal root ganglion nerve cells stained to reveal the microtubules (green) and actin filaments (red). The axon shaft contains bundles of microtubules that give structural support and carry cargo (pro...

Confocal image of "Brainbow" mouse cerebral cortex. In Brainbow mice, neurons randomly choose combinations of red, yellow and cyan fluorescent proteins, so that they each glow a particular color. Thi...

Confocal image of an axonal rainbow of oculomotor nerve motor axons from a "Brainbow" mouse brain, with each neuron expressing a distinct color. In Brainbow mice, neurons randomly choose combination...

This electron micrograph shows a cross section through an axon, its myelin wrap, and the associated myelin-producing Schwann cell from the the cochlear nerve of the cat. The external mesaxon is the l...

Confocal micrograph of neural stem cells transplanted into mouse brain Mouse neural stem cells, labelled with green fluorescent protein, have been transplanted into the brain of a newborn mouse and ar...