FIGURE 3-1 Two Views of a Cell (A) Tissue preparation revealing human pyramidal cells stained using the Golgi technique. (B) Cajal’s drawing of a single Purkinje neuron made from Golgi-stained tissue. (B) Drawing from Histologie du système nerveux de l’homme et des vertèbres, by S. Ramón y Cajal, 1909–1911, Paris: Maloine.

Biophoto Associates/Science Source/Photo Researchers