About 250 people, many of them undergraduate students, were used as subjects for the research.

By the early 1890s he began using his family as subjects.

You'll also see family bibles that he used as subjects for his canvases.

Twenty one violin players were used as subjects in the experiment.

We had a number of their prisoners, and we used them as subjects.

They even promised to let him use human beings as subjects and to furnish said humans in job lots.

He used some of his students in Leicester as subjects, with considerable success.

This helps you understand that artists who use birds as subjects and symbols in their work do so for varying reasons.

And, using them as subjects, Marina taught the class the fundamentals of control.

The brown rat and house mouse are both used as medical subjects.