... variation in membership of bacterial communities was primarily explained by body habitat, secondarily by host individual (within habitats), and nally by time (within habitats and individuals). ... including Lactobacillus and Clostri dium), and Actinobacteria (which include Corynebacteria and Mycobacteria) [13-15]); men’s and women’s hands differ in the number of species-level phylotypes ... 9Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309, USA. 2Department of Microbiology and Immunology, Stanford University, Stanford, CA 94305, USA. 6Department of...