| 摘要 |
L-Threonine is produced by cultivating bacteria of the genus Proteus in an aqueous nutrient medium containing a source of carbon, nitrogen and inorganic salts, and L- or DL-homoserine; or if the bacteria are isoleucine-requiring mutants, the medium contains isoleucine or a -aminobutyric acid, instead of or in addition to the homoserine.
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