ko pathway ratio_in_study ratio_in_pop p_value ko00910 Nitrogen metabolism 1/7 19/7206 0.0183190541182 ko00220 Arginine biosynthesis 1/7 24/7206 0.0230917682876 ko00250 Alanine, aspartate and glutamate metabolism 1/7 38/7206 0.0363497055298