title: Symbiotic nitrogen fixation: developmental genetics of nodule formation.
mesh_terms: D004247:DNA / Q000032:analysis; D000455:Medicago sativa / Q000235:genetics / Q000378:metabolism; D009154:Mutation; D009586:Nitrogen Fixation; D009693:Nucleic Acid Hybridization; D010944:Plants / Q000235:genetics* / Q000378:metabolism / Q000382:microbiology; D012231:Rhizobium / Q000235:genetics* / Q000378:metabolism
chemical_list: D004247:DNA