It’s not in the GI tract, but celiac disease is associated with a condition showing granular deposition of IgA in this organ’s papillae. (15[1])Several diseases of this organ can be distinguished using the Nikolsky sign. Aromatic anticonvulsants and bactrim can cause full thickness necrosis of this organ in Stevens-Johnson syndrome. Lupus can cause (15[1])discoid lesions in this organ. Antibodies targeting this organ’s BP180 and BP230 antigens cause bullous pemphigoid, which destroys the hemodesmosomal junction. (*) Merkel (10[1])disks and Meissner’s (-5[1])corpuscles are (-5[1])mechanosensors in this organ. The stratum spinosum, (10[1])stratum basale, and (-5[1])stratum corneum are layers of this organ, which contains keratinocytes bound to a basement membrane. This organ contains the sebaceous and sweat (10[1])glands. For 10 (0[1])points, name this largest organ in the human body, whose outer layer is the (10[1])epidermis. ■END■