title: Effect of polynuclear hydrocarbons on algal nitrogen fixation (acetylene reduction).
mesh_terms: D000114:Acetylene / Q000378:metabolism; D002245:Carbon Dioxide / Q000378:metabolism; D056890:Eukaryota / Q000187:drug effects* / Q000378:metabolism; D009586:Nitrogen Fixation / Q000187:drug effects*; D010084:Oxidation-Reduction; D011083:Polycyclic Compounds / Q000633:toxicity*; D014873:Water Pollutants / Q000633:toxicity*; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D011083:Polycyclic Compounds; D014873:Water Pollutants; D014874:Water Pollutants, Chemical; D002245:Carbon Dioxide; D000114:Acetylene