title: The biosynthesis of vitamins of the B12 group in mixed cultures of bacteria.
mesh_terms: D001407:Bacillus / Q000378:metabolism*; D004586:Electrophoresis; D011424:Propionibacterium / Q000378:metabolism*; D013053:Spectrophotometry; D014805:Vitamin B 12 / Q000096:biosynthesis*
chemical_list: D014805:Vitamin B 12