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机译:
Univ Calgary, Dept Biol Sci, 2500 Univ Dr 1 NW, Calgary, AB T2N 1N4.;
Rhizobia; Chemotaxis; Sensory proteins; Gram-negative bacteria; Invitro insertional mutagenesis; Bacillus-subtilis; Escherichia-coli; Nodulation plasmid; Myxococcus-xanthus; Direct selection; Rapid method; Meliloti; Identification;