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Relative percentage of the phylum level abundance in forearm skin microflora. The relative skin microbial abundance in the investigated individuals from the dairy farm in Clarksville (A), the integrated farm in Upper Marlboro (B) and Washington DC (C), and University of Maryland—College Park campus (D) was analyzed and compared at the phylum level. The top four phyla across each group are shown in (E). The a, b, c, and d indicate significant differences based on ANCOM.
