The biosynthesis of the vitamins thiamin, riboflavin, and folic acid.
D001419:Bacteria / Q000378:metabolism*; D005492:Folic Acid / Q000096:biosynthesis*; D005658:Fungi / Q000378:metabolism*; D012256:Riboflavin / Q000096:biosynthesis*; D013045:Species Specificity; D013831:Thiamine / Q000096:biosynthesis*
D005492:Folic Acid; D012256:Riboflavin; D013831:Thiamine