Pío del Río-Hortega (1882-1945) and the transplanting of the Spanish neurohistological school to Argentina

The man who found the cells Cajal could not stain — microglia in 1919, oligodendroglia in 1921 — and correctly guessed what both were for. Cajal expelled him from the laboratory in 1920 and never conceded the second discovery in print. The Civil War drove him to Paris, Oxford and finally Buenos Aires, where exile became transfer: a replica of his Madrid laboratory, a journal at the University of Buenos Aires, and students who carried his method into the electron microscopy of the synapse.