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Teisen is a neighborhood in the borough of Alna in Oslo, Norway.
It was a residential area in the 19th century, but from the 1950s it was built up with apartment blocks.
References
Henriksen, Petter, ed. (2007). "Teisen". Store norske leksikon (in Norwegian). Oslo: Kunnskapsforlaget. Retrieved 29 January 2010.