FIGURE 3.

Levels of selected B-vitamins in cecal samples from humanized gnotobiotic mice fed diets supplemented with varying B-vitamins. The levels of four vitamins (B1, B2, B3, and B5) were determined by LC–MS in the cecal samples from mice fed the same three diets (AD, AN, and AE) as in Figure 2 (using 3 replicates for each of the three diets) and plotted as averaged values (in ng/g cecal material) with SD as error bars.