Concerning the biosynthesis of vitamin B12.
D002247:Carbon Isotopes; D055598:Chemical Phenomena; D002621:Chemistry; D009682:Magnetic Resonance Spectroscopy; D011424:Propionibacterium / Q000378:metabolism; D014805:Vitamin B 12 / Q000096:biosynthesis*
D002247:Carbon Isotopes; D014805:Vitamin B 12