Two research groups have taken unprecedented, high-resolution images of nerve cells inside the brains ... and a dendritic spine provides the receiving end of a synapse, according to many ...

This image shows nerves (labeled in green) that control body movements emerging from the spinal cord of a mouse (upper left, in cross section) and connecting to muscles in the base of the leg.

This STED image of a nerve cell in the upper brain ... The inset shows the mushroom-shaped head of such a dendritic spine at which the nerve cells receive information from their peers.

Scientists at the European Molecular Biology Laboratory use a SNAP-tagging technique to create brilliant pictures of the nervous system up close. Is the Key to Human Immortality This Sea Creature?