11.   With time, the new trachea appears normal when doctors use a tube to look at it.

12.   Ristaino said her study marks the first time genetic analysis has been used to look at old plant specimens to trace a disease.

13.   The United States can monitor such tests from early warning satellites used to look for nuclear missile launches.

14.   These machines are used to look at the liver, lungs and virtually every other part of the body.

15.   We used to look for rattan to sell to furniture manufacturers.