passages.id: split_4_test_62_passage
passages.type: progene_text
passages.text: Depletion of the IEC-6 supernatant using cytokine specific antibodies revealed that both interleukin 6 ( IL-6 ) and transforming growth factor beta ( TGF-beta ) were responsible for the enhanced IgA secretion while TGF-beta suppressed IgM secretion .