Cystic fibrosis

By Mayo Clinic staff
Original Article:  http://www.mayoclinic.com/health/medical/IM04353
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Cystic fibrosis

Illustration showing mucus in lung

In cystic fibrosis, the lungs fill with thick mucus — an ideal breeding ground for bacteria, fungi and viruses. Most people with cystic fibrosis have chronic infections in their lungs.
IM04353

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