Distinct patterns of IgG and IgA against food and microbial antigens in serum and feces of patients with inflammatory bowel diseases. oleh Lisa Frehn, Anke Jansen, Eveline Bennek, Ana D Mandic, Ilknur Temizel, Stefanie Tischendorf, Julien Verdier, Frank Tacke, Konrad Streetz, Christian Trautwein, Gernot Sellge