Dendritic Spines and Development: Towards a Unifying Model of Spinogenesis—A Present Day Review of Cajal's Histological Slides and Drawings

Figure 14

Extended focus images of filopodia, protospines and dendritic spines of the pyramidal cells from fetal and newborn animals, Cajal histological preparations, Golgi-method. (a) Apical tuft, pyramidal cell, visual cortex, fetus “almost newborn” according to the label of the Cajal histological preparation, cat. (b) Apical tuft, pyramidal cell, cerebral cortex, newborn rabbit. (c) Apical trunk, layer V pyramidal cell, visual cortex, fetus “almost newborn,” cat, bipolar phase. (d) Apical trunk, layer V pyramidal cell, newborn cat. (e) Apical trunk, layer V pyramidal cell, cerebral cortex, newborn rabbit. (f) Basilar dendrite, layer V pyramidal cell, cerebral cortex, fetus “almost newborn,” cat. (g) Basilar dendrite, layer V pyramidal cell, visual cortex, newborn rabbit. (h) Oblique dendrite, apical trunk, layer V pyramidal cell, cerebral cortex, newborn cat. (i) Oblique dendrite, apical trunk, layer V pyramidal cell, cerebral cortex, newborn human.