Phage research (IMAGE) University of Pittsburgh Caption Taken in the lab of Graham Hatfull at the University of Pittsburgh, this image shows a plate of bacteria — clear circles indicate where bacteriophages have done their work. The lab provides these bacteria-killing viruses to patients who have no other options to treat antibacterial-resistant infections. Credit Aimee Obidzinski/University of Pittsburgh Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.