The Respiratory System
Colds and the flu may take a bigger toll on women than men, according to a new study based on people's reports of their own symptoms.
An elderly woman in Seattle died from an infection that she appears to have contracted from a horse she rode, according to a new report.
Before the dinosaur age, the coelacanth — a hefty, mysterious fish that now breathes with its gills — sported a well-developed lung, a new study finds.
Like its modern-day descendants, an ancient big fish known as a coelacanth had gills, but it also sported a well-developed lung, a new study finds.
Doctors originally guessed, based on an x-ray, that the item in the 15-month-old girl's chest was a hairpin.
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