<prompt> In pemphigus, autoantibodies are directed against which of the following structures?Acetylcholine receptorSarcomereEpidermisThyroid follicle  <response>: Pemphigus is an autoimmune disease wherein autoantibodies against epidermis cells are produced. Histologically, a phenomenon called acantholysis, wherein epidermal cells appear to detach and separate from each other, is observed. 