Linear IgA bullous dermatosis (LABD) is characterized by linear binding of at the epidermal basement membrane zone. The major autoantigens for LABD are 120 kDa LAD-1 and 97 LABD97, which shedding products BP180. In general, autoantibodies to them detected immunoblotting using cell extract or culture medium keratinocyte lines, such as HaCaT cells, but they not highly sensitive. Therefore, we sou...