Figure 1  .

Western immunoblot analysis using the patient's sera against lysates of PC9, A549, and SAEC cell lines. Lane 1; PC9, lane 2; A549; lane 3; SAEC cell line. In SAEC cell line, only one band (arrow *) that has a molecular weight of 62 kDa, which is the same as ADAM 10, is demonstrated. In PC9 and A549 cell lines, two bands (arrows ** and ***) are demonstrated. One antigen, which has a molecular weight of 54 kDa (arrow **), was previously identified as cytokeratin 8. Arrow *** is not characterised.