TGM2 and dermatitis herpetiformis, familial: Our results show that the number of intestinal TG3 antibody-secreting plasma cells was not reduced in DH patients by preincubation with recombinant TG2, suggesting that plasma cells secreting TG3-specific antibodies which are not cross-reactive with TG2 are present in the intestinal mucosa, and thus this fits well with the concept of DH patients having TG3-specific antibodies.