Gustaf Retzius

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Magnus Gustaf Retzius (17 October 1842 – 21 July 1919) was a Swedish physician and anatomist who dedicated a large part of his life to researching the histology of the sense organs and nervous system.

Retzius was born in Stockholm, son of the anatomist Anders Retzius (and grandson of the naturalist and chemist Anders Jahan Retzius). He enrolled at Uppsala University in 1860, and received his medicine kandidat degree there in 1866, transferred to the Karolinska Institute (KI), where he became medicine licentiat in 1869 and completed his doctorate in medicine (Ph.D.) in 1871 at Lund University. He received an extraordinary professorship in histology at KI in 1877 and an ordinary professorship in anatomy there in 1889 (acting from 1888), but resigned in 1890 after conflicts with other members of the institute; his wealthy marriage actually allowed him to pursue his research and writing without employment.

Gustaf Retzius published more than 300 scientific works in anatomy, embryology, eugenics, craniometry, zoology and botany. He gave his name to the millimeter-long Retzius cells in the central nervous system of the leech (Hirudo medicinalis). He was also a journalist and the editor of the newspaper Aftonbladet (1884-87). Retzius was married to Anna Hierta, daughter of Aftonbladet's founder Lars Johan Hierta.

Gustaf Retzius was politically liberal and socially active. Together with his wife he founded the Hierta-Retzius foundation, which is now administered by the Royal Swedish Academy of Sciences. The foundation has two funds, one for the promotion of biological research and the other for supporting projects of an important scientific or social nature. In 1901 Gustaf Retzius became a member of the Swedish Academy.