And unlike Golgi, what Cajal saw was a radically different organization of cells. There was no tangled “reticulation” in the nervous system, no hodgepodge of wiry extensions. Rather, there were individual neuronal cells, with intricate, delicate anatomy, that reached out to connect with individual neuronal cells. He sketched them by hand, in black ink, producing among the most beautiful drawings in the history of science. Some neurons were like thousand-branched trees, with dense arbors of extensions above, a pyramidal cell body in the middle, and a stem-like extension below. Some were like
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