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...

This electron micrograph is a cross section through a portion of an axon and its associated myelin wrap from the cochlear nerve of the cat. This high magnification view showcases the regular periodic...

Transmission electron micrograph of an axon from a rat tongue surrounded by a myelin sheath. Image made available by James D. Jamieson and the Department of Cell Biology, Yale University School of M...

Transmission electron micrograph of a myelinated axon from a rat tongue. Image made available by James D. Jamieson and the Department of Cell Biology, Yale University School of Medicine.

Transmission electron micrographs of serial sections of nerve cells illustration a dendrite. Note that this very early (1954) micrograph is primarily of historical interest since it pre-dates glutara...

Transmission electron micrograph of rat neuronal dendrite. Note that this very early (1954) micrograph is primarily of historical interest since it pre-dates glutaraldehye fixation which was introd...

Electron micrograph of an unmyelinated nerve Schwann cell from a rat tongue. Image made available by James D. Jamieson and the Department of Cell Biology, Yale University School of Medicine.

Transmission electron micrograph of nerve cell terminals on medulla dendrites. The body of the dendrite (lower part of image) contains aligned microtubules (neurotubule). Synapses are seem on the den...

Transmission electron micrograph of a nerve cell synapsing on a dendrite. The synapse contains many synaptic vesicles and a cluster of mitochondria. Note that this very early (1953) micrograph is pr...

Proximity of excitatory and inhibitory axon terminals adjacent to pyramidal cell bodies provides a putative basis for nonsynaptic interactions. Video sequence made up of 14 consecutive confocal micros...