DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Swollen glands in the neck (cervical lymphadenopathy, at left) in a 17 year old male patient with glandular fever. The lymph glands in the neck which help to fight infection are inflamed. Glandular fever is caused by the Epstein-Barr virus.
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