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42783 Pathology

A 31-year-old man with AIDS complains of difficulty in swallowing. Examination of his oral cavity demonstrates whitish membranes covering much of his tongue and palate. Endoscopy also reveals several whitish, ulcerated lesions in the esophagus. These pathologic findings are fundamentally caused by loss of which of the following immune cells in this patient?

AB lymphocytes
BHelper T lymphocytes
CKiller T lymphocytes
DMonocytes/macrophages
Pathology
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