Roger Wolcott Sperry Quote
The cells and fibers of the brain must carry some kind of individual identification tags, presumably cytochemical in nature, by which they are distinguished one from another almost, in many regions, to the level of the single neurons.
As quoted in "Brain Wiring by Presorting Axons" by Kazunari Miyamichi and Liqun Luo in Science 325 (5940) (31 July 2009)
