title: BIOLOGICAL FORMATION OF MOLECULAR HYDROGEN.
mesh_terms: D001419:Bacteria; D001421:Bacteria, Anaerobic; D002965:Classification; D004734:Energy Metabolism; D056890:Eukaryota; D006859:Hydrogen; D006864:Hydrogenase; D008660:Metabolism; D010084:Oxidation-Reduction; D010100:Oxygen; D012106:Research
chemical_list: D006859:Hydrogen; D006864:Hydrogenase; D010100:Oxygen
keywords: ALGAE; BACTERIA; CLASSIFICATION; EXPERIMENTAL LAB STUDY; HYDROGEN; METABOLISM