title: Molecular genetic analysis of Klebsiella pneumoniae nitrogen-fixation (nif) genes.
mesh_terms: D002874:Chromosome Mapping; D003001:Cloning, Molecular; D004251:DNA Transposable Elements; D005786:Gene Expression Regulation; D005796:Genes; D007711:Klebsiella pneumoniae / Q000235:genetics*; D009586:Nitrogen Fixation; D009591:Nitrogenase / Q000235:genetics; D010957:Plasmids; D012231:Rhizobium / Q000235:genetics*; D013045:Species Specificity; D013559:Symbiosis
chemical_list: D004251:DNA Transposable Elements; D009591:Nitrogenase