A 6-year-old boy is brought to the physician for progressive fatigue over the past month. Physical examination shows generalized lymphadenopathy. Laboratory studies show: platelets 120,000/μL, Hb 11 g/dL, WBC 38,000/μL.
Which of the following is most likely to be seen in this patient?
Blue rod-like structures containing myeloperoxidase
CD10 (+) cells
CD15/30 (+) cells
Deficiency of CD40L
Granulocytosis
