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Ziv Y, Ron N, Butovsky O, Landa G, Sudai E, Greenberg N, Cohen H, Kipnis J, Schwartz M (February 2006). "Immune cells contribute to the maintenance of neurogenesis and spatial learning abilities in adulthood". Nat Neurosci. 9 (2): 268–75. doi:10.1038/nn1629. PMID16415867.
Garrett JC, Steensen RN, Stevensen RN (1991). "Meniscal transplantation in the human knee: a preliminary report". Arthroscopy: The Journal of Arthroscopic and Related Surgery. 7 (1): 57–62. doi:10.1016/0749-8063(91)90079-D. PMID2009121.