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Field of soybeans.
A field of soybeans. ARS is preserving Rhizobium bacteria, which help soybeans and other legumes convert nitrogen from the air into fertilizer. (Scott Bauer, K8322-16)
Vials of Rhizobium specimens.
These vials hold samples that are part of the 5,000 curated specimens in the ARS Rhizobium collection in Beltsville, Maryland. (Patrick E. Elia, D3560-1)
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