<prompt> A patient presented with oral mucosal lesions and flaccid blisters Over skin. It detects what and which pattern under microscopic examination?Fishnet pattern IgG in epidermisIgG at Dermo-epiderrnal juctionIgA at Dermo-epidermal junctionIgG in dermis  <response>: In pemphigus vulgaris skin involvement stas in the form of flaccid blisters. Cutaneous lesions are usually preceded by blisters and erosions of oral mucosa In Direct immunofluorescence intercellular IgG -fishnet pattern throughout the epidermis is seen in pemphigus vulgaris. page no.280,287 Reference IADVLs concise textbook of dermatology 