Phlegm  

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Train wreck at Montparnasse (October 22, 1895) by Studio Lévy and Sons.
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Train wreck at Montparnasse (October 22, 1895) by Studio Lévy and Sons.

Phlegm is a sticky fluid secreted by the mucous membranes of humans and other animals. Its definition is limited to the mucus produced by the respiratory system, excluding that from the nasal passages, and particularly that which is expelled by coughing (sputum). Its composition varies, depending on climate, genetics, and state of the immune system, but basically is a water-based gel consisting of glycoproteins, immunoglobulins, lipids, etc. Phlegm may be of several different colors.



Unless indicated otherwise, the text in this article is either based on Wikipedia article "Phlegm" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on original research by Jahsonic and friends. See Art and Popular Culture's copyright notice.

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