1. The apps allow smartphone users to participant in medical research experiments.

2. He is the only surviving participant in the attacks in police custody.

3. Verizon Wireless is not a participant in the program and uses its own SIM cards.

4. A second participant is up for a partial reward on the same device.

5. Each participant speaks from a different direction, as if he or she was in the room with you.

6. For example, every loan or distribution to an employee participant must be authorized by a trustee.