in this study , we investigated whether peyer 's patch-derived t-cell subsets participate in vitro in self major histocompatibility ( mhc ) class ii antigen ( ag ) -mediated immunoregulatory circuits for gut-mucosal iga isotype selection in the presence of peyer 's patch ( pp ) -derived syngeneic surface immunoglobulin m ( sigm ) -bearing b cells .
C0026724
mucosal
C0031272
peyer 's patch