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Freije JP, Abrahamson M, Olafsson I, Velasco G, Grubb A, López-Otín C.Freije JP, et al.J Biol Chem. 1991 Oct 25;266(30):20538-43.J Biol Chem. 1991.PMID: 1939105Free article.
Balbín M, Vizoso F, Sánchez LM, Venta R, Ruibal A, Fueyo A, López-Otín C.Balbín M, et al.Clin Chem. 1991 Apr;37(4):547-51.Clin Chem. 1991.PMID: 2015669
Balbín M, Freije JM, Fueyo A, Sánchez LM, López-Otín C.Balbín M, et al.Biochem J. 1990 Nov 1;271(3):803-7. doi: 10.1042/bj2710803.Biochem J. 1990.PMID: 2244881Free PMC article.