From stanfordmedicine
You will probably never get the chance to take a picture like this, but new imaging technology developed at the Stanford University School of Medicine has been able to capture the synapses connections in the [mouse] brain in unprecedented detail.
In the video, we are looking at a visual reconstruction (from array-tomography data) of synapses in the mouse somatosensory cortex, the part of the cerebral cortex that is responsive to sensation. Neurons are depicted in green; multicolored dots represent separate synapses. A synapse is less than a thousandth of a millimeter in diameter.
The imaging technology works by combining high-resolution photography with specialized fluorescent molecules that bind to different proteins and glow in different colors. Massive computing power captures this information and converts it into imagery.
For more information, visit: Stanford.
source PopSci