Colocalization of IgA and TGe in the papillary dermis of DH patients. (A) In DH patients, TGe shows normal distribution pattern in the epidermis; typical precipitates are present, however, in the upper dermis. In these precipitates, the TGe (red) and the IgA (green) colocalize as visualized with a confocal microscope (yellow)

Miklós Sárdy1, Sarolta Kárpáti1, Barbara Merkl2, Mats Paulsson2 and Neil Smyth2 Epidermal Transglutaminase (TGase 3) Is the Autoantigen of Dermatitis Herpetiformis

The Journal of Experimental Medicine, Volume 195, Number 6, March 18, 2002 747-757