[1] Biocenter Oulu and Department of Biochemistry,
[2] University of Oulu,undefined
[3] Linnanmaa,undefined
[4] 90570 Oulu,undefined
[5] Finland,undefined
[6] Division of Matrix Biology,undefined
[7] Department of Medical Biochemistry and Biophysics,undefined
[8] Doktorsringen 9A3,undefined
[9] Karolinska Institute,undefined
[10] 171 77 Stockholm,undefined
[11] Sweden e-mail: karl.tryggvason@mbb.ki.se Tel.: +46-8-7287720,undefined
[12] Fax: +46-8-316165,undefined