The following are multiple choice questions (with answers) about medical knowledge.   **Question:** In which of the following disorders a circulating antibody directed to intercellular cementing substance of stratified squamous epithelium is observed:   (A) Lichen planus   (B) Verrucous vulgaris   (C) Bullous pemphigoid   (D) Pemphigus vulgaris
['(D) Pemphigus vulgaris <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Lichen planus \n (B) Verrucous vulgaris \n (C) Bullous pemphigoid \n (D) Pemphigus vulgaris <> possible answers', '  In which of the following disorders a circulating antibody directed to intercellular cementing substance of stratified squamous epithelium is observed: <> context@']