"It was an interesting study, but not well enough controlled."

I'd certainly like copies of these two; they make a most interesting study.

It is an interesting study to watch the play of its organisation.

"This is an interesting study that raises many questions, but really doesn't answer any."

The old English herbalists, you know, are a very interesting study.

This and the one about zombies might make for an interesting study.

One particularly interesting study asked 351 couples married 15 years or longer to list the main reasons for their marital success.

It would actually be a very interesting study for one of your pupils.

That would be an interesting study for one of the field teams.