Confluent IEC-6 cells grown on plastic or FN-coated plates were left untreated or were treated with DFMO and exposed to TNF-α/CHX for 3h. Cells were washed, and DNA fragmentation was measured as described in the methods section (A). (mean ± SE, n=3, p<0.05considered significant). **, significantly different from TNF-α/CHX treated plastic group, †, significantly different from TNF-α/CHX untreated plastic.