title: Ultrastructure of release of Rhizobium and formation of membrane envelope in root nodule.
mesh_terms: D002462:Cell Membrane; D002467:Cell Nucleus / Q000382:microbiology; D002473:Cell Wall; D003593:Cytoplasm / Q000382:microbiology; D008854:Microscopy, Electron; D059828:Plant Cells; D012231:Rhizobium / Q000166:cytology* / Q000254:growth & development; D013194:Staining and Labeling