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yusuki yusuki
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Posts: 2318
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9 years ago
What is the cause of chronic bronchitis?
a.   chronic irritation, inflammation, and recurrent infection of the larger airways
b.   a genetic defect causing excessive production of mucus
c.   hypersensitivity to parasympathetic stimulation in the bronchi
d.   deficit of enzymes preventing tissue degeneration

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monosaccharidemonosaccharide
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9 years ago
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yusuki Author
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9 years ago
What I needed, thanks.
wrote...
9 years ago
No problemo Smiling Face with Open Mouth
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