USMLE Step 1 Quiz
20 questions · no time limit
0:00
IMMUNOLOGY
Question 1 of 20
No time limit
Current
Answered
Flagged
Not seen
PASSAGE
A 5-year-old boy presents with massive, non-malignant lymphadenopathy, splenomegaly, and autoimmune hemolytic anemia. Laboratory analysis reveals an elevated number of T cells in his peripheral blood that are negative for both CD4 and CD8. Further investigation shows a mutation in the gene encoding Fas.
The accumulation of lymphocytes and subsequent autoimmunity in this patient is due to a failure of which of the following processes?
YOUR PROGRESS
20
QUESTIONS
Ready when you are
Answer in any order. Your progress shows here as you go.
QUESTIONS
KEYBOARD
Pick an answer ABCD
Next question ↵→
Previous ←
Flag for review F
Answers save as you go · flagged questions come back at the end