The researchers also performed DNA sequencing of human trachea and lung samples from people who had smoked. As in the mouse experiment, the results showed that cells from separate precancerous ...

For example, breathing requires airflow between the nose or mouth and trachea. On the other hand, the lungs must be protected from aspiration during swallowing or vomiting by closing the ...

The researchers also performed DNA sequencing of human trachea and lung samples from people who had smoked. As in the mouse experiment, the results showed that cells from separate precancerous lesions ...