Fig. 7From: Longitudinal homogenization of the microbiome between both occupants and the built environment in a cohort of United States Air Force CadetsSourcetracker analysis shows the sources of bacteria found on built surfaces. The surfaces include the dormitory room floor and occupant-specific desks (i.e., desk1, desk2). The four sources include the two occupants’ skin and gut samples and the outdoor surface (which is representative of external environment microbiota)Back to article page