Agricultural microbiology.
D000383:Agriculture; D004274:DNA, Recombinant; D007711:Klebsiella pneumoniae / Q000235:genetics; D009584:Nitrogen / Q000378:metabolism; D009586:Nitrogen Fixation; D012231:Rhizobium / Q000235:genetics; D012988:Soil Microbiology; D013559:Symbiosis
D004274:DNA, Recombinant; D009584:Nitrogen