n :  a basic polypeptide antibiotic C₂₅H₄₃N₁₃O₁₀ that is produced by several soil actinomycetes of the genus Streptomyces (as S. puniceus) and is administered intramuscularly in the form of its sulfate in the treatment of tuberculosis esp. in combination with other antituberculous drugs .
 
 
 
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