Average difference of acetate and butyrate concentrations in the growth media after 48 h of incubation of each <i>F. prausnitzii</i> isolate.

<p>The bars represent the mean concentration in ppm. Error bars indicate the standard error of the mean. Based on the butyrate production, the <i>F. prausnitzii</i> isolates were entitled from 1–38 (bovine), and 1S and 2S (swine).