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. 2019 Jul 2;10:1485. doi: 10.3389/fmicb.2019.01485

FIGURE 1.

FIGURE 1

In vivo experimental design. (A) Humanization of germ free mice was carried out by successive gavage with human feces derived from 5 healthy human subjects (HF) at 1 week intervals. After the final gavage, mice were maintained for 4 weeks and fecal pellets from humanized mice (HM) were collected. Lower panel. Germ free mice were gavaged twice with fecal pellets derived from humanized mice at an interval of 2 days. Fecal pellets were collected on Day 7 (controls). B-vitamin supplementation in drinking water (Table 1) was maintained for 4 weeks and fecal pellets were collected for 16S rRNA sequencing and cecal contents were collected for LC/MS measurement of B-vitamins. (B) PCoA analysis of mouse humanization. Unweighted Uni-Frac β-diversity of communities at different stages of humanization.