Immunology USMLE Step 1 Practice Question
A 23-year-old female suffers from a condition in which her antibodies react with antigens present on the surface of cells. The mechanism of action involves complement fixation by the antibody-antigen complex, which causes lysis or phagocytosis of the affected cell. Which of the following conditions is an example of this type of hypersensitivity?
Answer choices
- AAgranulocytosisCorrect answer
- BFood allergy
- CTuberculosis
- DSerum sickness
- EAllergic rhinitis
- FGoodpasture syndrome
See the full explanation
Get the correct-answer rationale, why each distractor is wrong, the underlying mechanism, and high-yield associations — plus adaptive practice that targets your weak areas — with a free MedBoardPRO account.