Porcine E. coli: virulence-associated genes, resistance genes and adhesion and probiotic activity tested by a new screening method. oleh Peter Schierack, Stefan Rödiger, Christoph Kuhl, Rico Hiemann, Dirk Roggenbuck, Ganwu Li, Jörg Weinreich, Enrico Berger, Lisa K Nolan, Bryon Nicholson, Antje Römer, Ulrike Frömmel, Lothar H Wieler, Christian Schröder