Pio del Rio-Hortega Directory References Discover 7 Deadliest Weapons in History 9 of the World’s Deadliest Snakes 6 Animals We Ate Into Extinction Timeline of the 2000s 7 of History's Most Notorious Serial Killers 7 Everyday English Idioms and Where They Come From 12 Novels Considered the “Greatest Book Ever Written” Contents Pio del Rio-Hortega Ask the Chatbot a Question Ask the Chatbot a Question Learn about this topic in these articles:microglia In 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