Her research considers the molecular mechanisms that underpin processes in gut microbioata and the mucosal barrier.
[citation needed] She was a medical resident in Cluj-Napoca, where she completed various training positions and was eventually made assistant professor.
[citation needed] During her early career she became interested in the molecular mechanisms that underpin immune homeostasis.
[1] Făgărășan contributed to the discovery of Activated Induced Deaminase, and went on to short[clarification needed] the role of AID in gut homeostasis.
In 2002, Făgărășan was appointed leader of the Riken Laboratory for Mucosal Immunity at the Research Centre for Allergy and Immunology.