His area of research is the American government and public policy.

It is an area of much recent research and interest.

This is a difficult problem and an active area of medical research.

This is an area of active research in several countries.

After the war she worked in the area of research on foreign woods.

This wasn't a main control center, it was their research area.

At present, there is no European research area as such.

This is an area of active research and subject to change.

He repeatedly turned from one area of research to another, only to return again.

Another key area of research is focused on an opportunity rather than a problem.