Gefitinib-responsive EGFR-positive colorectal cancers have different proteome profiles from non-responsive cell lines - Loeffler-Ragg, Judith; Skvortsov, Sergej; Sarg, Bettina; Skvortsova, Ira; Witsch-Baumgartner, Martina; Mueller, Doris; Lindner, Herbert; Zwierzina, Heinz (European Journal of Cancer, 2005)