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01-10-2017
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Some parts of the human body have adaptation to reduce the entry of live pathogens how does the trachea is adapted to reduce the entry of live pathogens

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mjplovesmango mjplovesmango

01-10-2017

The mucous that lines it, along with coughing.

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yelizasenior yelizasenior

03-10-2017

El muscular respiratorio y digestivo

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