Isolation and characterization of rheumatoid arthritis synovial fibroblasts from primary culture — primary culture cells markedly differ from fourth-passage cells
Thomas Zimmermann, Elke Kunisch, Robert Pfeiffer, Astrid Hirth, Hans-Detlev Stahl, Ulrich Sack, Anke Laube, Eckehard Liesaus, Andreas Roth, Ernesta Palombo-Kinne, Frank Emmrich and Raimund W Kinne