Abstract
Using an immunoblotting technique, sera from 25 patients with pemphigoid gestationis were examined and tested against epidermal and dermal extracts of normal skin. The major antigen recognized by seven patients' sera was a molecule of 180 kDa, pemphigoid gestationis antigen, extractable only from the epidermis. Sera from 18 patients with bullous pemphigoid were studied as positive controls and the major antigen recognized was a larger molecule of 220 kDa. There was some degree of shared recognition of antigens with three patients with pemphigoid gestationis recognizing the 220 kDa bullous pemphigoid antigen. In addition one bullous pemphigoid serum recognized the 180 kDa pemphigoid gestationis antigen. The dominant pemphigoid gestationis antigen, however, differs from bullous pemphigoid antigen.
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