1. Institute for Cellular Therapeutics, University of Louisville, 570 South Preston Street, Louisville, KY 40202, USA.
2. Department of Microbiology and Immunology, University of Louisville, 319 Abraham Flexner Way, Louisville, KY 40202, USA.
3. Oral Health and Systemic Disease Research Group, University of Louisville, 501 South Preston Street, Louisville, KY 40202, USA.