IMMT and Barrett esophagus: While p87 is the antigen recognized by the Adnab-9 monoclonal, it is present in premalignant conditions [8] and appears to be part of the InImS and herein seems to play a role in the regression of BE, as the focal nature of staining is proportionate to that shown by Nomura et al. [27] and other authors, who speculate that regression may be associated with low MPC expression.