Figure 4.

Cajal's histological preparations and drawings showing some of his most important discoveries with the Reduced Silver Nitrate Method. (A) Growth cones of the spinal cord of chicken embryo on the fourth day of incubation; (B) Neurofibrils in a motoneuron in a cat; (C) Schmidt-Lantermann's clefts; (D) Basket cells arborization surrounding Purkinje cells in cerebellum; (E) Axonal plexus (E1); climbing fibers and recurrent axon collaterals of Purkinje cells (E2); (F1,F2) Neurofibrils in a pyramidal cell; (F3,F4) Nucleolus (b) and other nuclear components of the pyramidal cells: Cajal's body (a). (Drawings reproduced with the permission of the Inheritors of Santiago Ramón y Cajal ©).