Which of the following type hypersensitivity reactions occurs in Farmer's lungs -a) Type Ib) Type IIc) Type IIId) Type IV
High-Yield Explanation
Hypersensitivity pneumonitis (including farmer's lung) is an immunologically mediated response to an extrinsic antigen that involves both immune complex (type HI) and delayed type (type IV) hypersensitivity reactions._____ Robbins 703.