Source:http://linkedlifedata.com/resource/umls/id/C1057045
NCI: A taxonomic family of bacterium, which perform nitrogen fixation, in the phylum Proteobacteria that includes the genera Methylobacterium and Meganema, among others.,MSH: A family of gram-negative bacteria in the order Rhizobiales. Genera include METHYLOBACTERIUM, Protomonas, and Roseomonas.