title: Use of immunoadsorbent affinity chromatography to purify component I of nitrogenase from extracts of Azotobacter vinelandii.
mesh_terms: D000937:Antigen-Antibody Reactions; D001395:Azotobacter / Q000201:enzymology*; D002846:Chromatography, Affinity; D009591:Nitrogenase / Q000276:immunology / Q000302:isolation & purification*
chemical_list: D009591:Nitrogenase