Johnson Rajasingh currently works as a Professor in the Department of Bioscience Research at the University of Tennessee Health Science Center, Memphis, and also got his secondary appointment at the Department of Medicine-Cardiology and Department of Microbiology, Immunology & Biochemistry at the same university. He trained as a postdoctoral fellow at Vanderbilt University, St. Elizabeth’s Medical Center, and Northwestern University before accepting an appointment as an Assistant Professor at the University of Illinois at Chicago in 2008. His research interest is focused on novel strategies to enhance the therapeutic benefits of stem cells in regenerative medicine particularly repairing the heart, lung, and oral tissues.