What is the primary function of Langerhans' cells?
AAntigen presenting cells
BInvolved in immune responses
CPhagocytosis of pathogens
DKeratinocyte production and maintenance
A 32 year old man presents with a 3-month history of weight loss, night sweats, a productive cough with blood-tinged sputum, anorexia, general malaise, and a low grade fever. A PPD skin test shows > 10 mm of induration. If the area of induration were biopsied, which of the following type of reactive cells would be found?
AEosinophil
BT lymphocyte
CB lymphocyte
DMast cell
A 60-year-old female presents with eczematous itching lesions. Biopsy revealed a subepidermal cleft with Direct Immunofluorescence showing Linear C3 & IgG deposition along the basement membrane zone. What is the likely diagnosis?
APemphigus foliaceus
BPemphigus Vulgaris
CDermatitis herpetiformis
DBullous Pemphigoid
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