Pio del Rio-Hortega References Pio del Rio-Hortega Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: microglia…and 1921 by Spanish neuroanatomist Pio del Rio-Hortega, who was a student of Spanish histologist Santiago Ramón y Cajal, best known for his work in establishing neurons as the basic units of nervous tissue. Read More…and 1921 by Spanish neuroanatomist Pio del Rio-Hortega, who was a student of Spanish histologist Santiago Ramón y Cajal, best known for his work in establishing neurons as the basic units of nervous tissue. Read More