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

Figure 12

(a) Depicts a Purkinje cell, “adult bird” according to the label of the Cajal histological preparation, Golgi method. (b) Purkinje cell of “adult man” according to the label of the Cajal histological preparation, Golgi method. (c) Golgi-impregnated dendritic spines of the Purkinje cell of “adult bird.” (d) Golgi-impregnated dendritic spines of the Purkinje cell of “adult cat.” (e) Golgi-impregnated dendritic spines of the Purkinje cell of “adult man.” (f) Three-dimensional reconstruction of a portion of the dendritic tree of the “adult bird” (a). (g) Three-dimensional reconstruction of a portion of the dendritic tree of the “adult cat.” (h) Three-dimensional reconstruction of a portion of the dendritic tree of the “adult human.” (i) Boxed region in (f) showing sessile dendritic spines. (j) Golgi-impregnated sessile spines of “adult bird.” (k) Boxed region in (g) showing pedunculated spines. (l) Golgi-impregnated pedunculated spines of “adult cat.” (m) Boxed region in (h) showing pedunculated spines. (n) Golgi-impregnated pedunculated spines of “adult human.” Filopodia are color coded in green.