Far more types of animals have proved vulnerable this season, although not always the ones experts expected.

The type of group leadership, however, proved to be wrong.

This type of scenario has proven disastrous in the past.

This type of backup proved superior to a paper record system.

Though the two types of shells have proven effective, the geese eventually return, both in the evening and then again late at night.

So far, this type of therapy has proven both safe and beneficial.

In short, no one yet knows which type of stem cell will prove more suitable for clinical use, and researchers would like to try both.

When this type of film proved successful, many imitators followed.

Once airborne, however, the type proved easy to fly.

This type of training has proven more effective in inculcating concepts and ideas.