Figure 1. Phylum-level taxonomy of fecal and colonic bacterial populations from pigs inoculated with human fecal microbiomes. Experiment 1−3 refer to the three experiments described in the text and in Table 1. Phyla are color-coded as shown in the key. A total of 10⁴ V6 16S sequence reads per sample were classified. The taxonomic time series of two pigs from experiment 1 and 3 are shown. A single time series is shown for experiment 2. The x axis shows pig age in days. Bars labeled “H” represent human inocula; samples obtained directly from the colon are labeled “gut.” The two left-most bars in experiment 2 are from independent replicate analyses of the infant fecal sample used as inoculum.