ko pathway ratio_in_study ratio_in_pop p_value ko04974 Protein digestion and absorption 3/13 96/7206 0.0005948827617 ko04672 Intestinal immune network for IgA production 2/13 37/7206 0.00193106030011 ko00120 Primary bile acid biosynthesis 1/13 20/7206 0.0355153563198