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sputum

sputum is a thick fluid that is produced in the lungs and in the airways that lead to the lungs. sputum is different than saliva.

a person who has an infection or disease of the respiratory system may cough up sputum. some diseases can cause pus, blood, or bacteria to show up in the sputum.

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this information does not replace the advice of a doctor. healthwise, incorporated, disclaims any warranty or liability for your use of this information. your use of this information means that you agree to the terms of use and privacy policy. to learn more about healthwise, visit healthwise.org. © 1995-2022 healthwise, incorporated. healthwise, healthwise for every health decision, and the healthwise logo are trademarks of healthwise, incorporated.

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