Fig. 1

Breast milk microbiota in 39 Canadian women identified by 16S rRNA amplicon sequencing. The relative abundances of bacterial genera in different human milk samples were visualized by bar plots. Each bar represents a subject and each coloured box a bacterial taxon. The height of a coloured box represents the relative abundance of that organism within the sample. Taxa present in less than 2 % abundance in a given sample are displayed in the “remaining fraction” at the top of the graph (grey boxes). As shown by the bar plots, a variety of bacteria were detected in breast milk. The legend is read from bottom to top, with the bottom organism on the legend corresponding to the bottom coloured box on the bar plot