This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'Which of the following shows granular deposition of IgA in dermal papilla – \nSelect and explain. \nA. Dermatitis herpetiformis, B. IgA papillomatosis of childhood, C. Bullous pemphigoid, D. Gestational herpes', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Immunopathological appearance of vesicobullous disorders\n\n\n\n\nBullous pemphigoid\n\xa0\n\n\nLinear band of IgG or C3 in epidermal basement membrane\n\xa0\n\n\n\n\nPemphigus vulgaris\n\xa0\n\n\nCell surface deposits of IgG on keratinocytes\n\xa0\n\n\n\n\nPemphigus foliaceous\n\xa0\n\n\nCell surface deposits of IgG on keratinocytes\n\xa0\n\n\n\n\nPemphigoid gestationis\n\xa0\n\n\nLinear band of C3 in epidermal basement membrane zone\n\xa0\n\n\n\n\nDermatitis herpeteformis\n\xa0\n\n\nGranular deposits of IgA in dennal papillae\n\xa0\n\n\n\n\nChronic bullous disease of childhood\n\xa0\n\n\nIgA deposits along the dermoepidermal junction\n\xa0\n\n\n\n\nLinear IgA dermatosis of adults\n\n\nLinear deposits of IgA at dermoepidermal junction', 'role': 'assistant'}]