Linear IgG basement membrane zone antibody staining in bullous pemphigoid by DIF microscopy

DIF microscopy of perilesional skin from a patient with bullous pemphigoid reveals characteristic linear IgG basement membrane zone staining.

IgG: immunoglobulin G; DIF: direct immunofluorescence.

Courtesy of Kristin M Leiferman, MD, Immunodermatology Laboratory, Department of Dermatology, University of Utah, Salt Lake City, Utah.