An 18-year-old woman comes to the physician because of fever, a severe sore throat, and fatigue for 1 week. Her temperat

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An 18-year-old woman comes to the physician because of fever, a severe sore throat, and fatigue for 1 week. Her temperature is 38.1°C (100.6°F).Physical examination shows pharyngeal erythema, generalized tender lymphadenopathy, and splenomegaly. Laboratory studies show a leukocyte count of 4400/mm3with 20o/o atypical lymphocytes Which of the following cell types most likely accounts for the atypical lymphocytes in this patient's peripheral blood?


A) Gamma delta T lymphocytes
B) Reactive B lymphocytes
C) Reactive T lymphocytes
D) Virus-infected B lymphocytes
E) Virus-infected T lymphocytes