Figure 2.

First works of Fernando de Castro in the structure of the peripheral nervous system. (A) Image from the original PhD thesis of Fernando de Castro, with his hand-drawn illustrating some pathological forms of neurons from the Gasser’s ganglion from a patient of osteomalacia. The typewritten figure legend (in Spanish) for the defense of the thesis is conserved for the reader, as well as the signature from de Castro at that time. This figure was published in de Castro (1922). (B) de Castro’s original hand-sketch of a portion of a sympathetic lumbar ganglion in normal condition (human, 38-year old) originally stained with the Cajal’s method, and illustrating preganglionic (a) and intraganglionnic endings (d) over dendritic bushes, accesory dendrites forming bushes (b,g), a protoplasmic process forming collaterals (c) and a pericellular dendritic nest (f). This schema was published in de Castro (1923c, 1933). (C) Image of a young Fernando de Castro (1922) at his family house in Cercedilla, in the mountains close to Madrid (A–C) are part of Archive Fernando de Castro.