Prior to his appointment in the Parkos lab at the University of Michigan, he worked as a surgical resident in the Department of General Surgery at the University Hospital of Wuerzburg, Germany, and was affiliated with the research group of Dr. Nicolas Schlegel. Dr. Kelm currently studies the multistep process of transepithelial migration of leukocytes under inflammatory conditions using intravital microscopy and focuses on the role of Lewis glycans during this process.