Drawings by the Nobel-winning neuroscientist, Santiago y Cajal
Above: Neurons in the cerebellum of a chick.
Above: Tumor cells in the covering membranes of a human brain.
Above: Purkinje neurons from the human cerebellum.
Above: Glial cells in the cerebral cortex of a paralyzed man.
Above: Neurons in a frog's small intestines.













