DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Tonsillitis. Close-up of the mouth of an 41-year-old man with viral tonsillitis, an infection of the tonsils. His throat has become inflamed and swollen, showing pus-covered tonsils at lower left and right. The tonsils are lymph nodes that help to protect the throat and respiratory tract from infections. Tonsillitis results in a severe sore throat and fever. Viral tonsillitis is treated with painkillers.
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