1.   And officials now believe it is too dangerous to send divers into a field of small, jagged pieces that could cut their air tubes.

2.   As the babies grow and strengthen their underdeveloped chest muscles in the next few weeks, the air tubes will be removed.

3.   The air tube in his trachea kept him from talking, but he was able to nod and shake his head.

4.   The cancer is called adenocarcinoma, named for the cells that line narrow air tubes deep in the lung.

5.   To a sealed chamber, the researchers connected air sampling tubes and an atomizer which could create a fine spray from cultures of bacteria in liquid.

6.   Last year, a patient with lung disease complained to the Ombudsman after doctors had accidentally mixed up his air tubes in hospital.

7.   The divers risked puncturing their pressure suits or air tubes if they ventured further into the tangle of broken equipment, officials said.

8.   The divers risked puncturing their pressure suits or air tubes if they ventured further.