Coughing up bright green mucus

phlegm? Phlegm is the specific name for mucus that you cough up from your lungs. Your doctor might call it ‘sputum’. And mucus is a jelly-like liquid found all over the body that protects you from infection. Coughing up lots of phlegm doesn't mean you have asthma, although some people with asthma do find they cough up lots of phlegm. Does ................
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