About MIC

Contact Information

Uniformed Services University of the Health Sciences
Department of Microbiology and Immunology
4301 Jones Bridge Road
Bethesda, Maryland 20814-4799
Room B4137
Phone: (301) 295-1584
Lab: (301) 319-8022
Fax: (301) 295-3773
Email: douglas.merrell@usuhs.edu

Merrell Bio



Ryan C. Johnson

Ryan C. Johnson

Graduate Student

Darcie Bridge

USU, Emerging Infectious Diseases Graduate Program, Department of Microbiology and Immunology


  • 2010 B.S. Biology, Juniata College, Huntingdon, PA

Laboratory Work Experience

  • 2007-2010, Student Research Assistant, Department of Biology, Juniata College
  • 2009 ASM Undergraduate Research Fellow

Selected Publications

Johnson R.C., Ellis M.W., Lanier J.B., Schlett C.D., Cui T., and Merrell D.S. Correlation between nasal microbiome composition and remote purulent skin and soft tissue infections. Infect Immun.

Johnson R.C., Hu H.Q., Merrell D.S., and Maroney M.J. Dynamic HypA zinc site is essential for acid viability and proper urease maturation in Helicobacter pylori. Metallomics. 2015.

Hull, T. D., R. Min-Hyung, M. J. Sullivan, R. C. Johnson, N. T. Klena, R. M. Geiger, M. Gomelsky, and J. A. Bennett. Cyclic Di-GMP Phosphodiesterases RmdA and RmdB are Involved in Regulating Colony Morphology and Development in Streptomyces coelicolor. Journal of Bacteriology. 194(17):4642-465, 2012.