[Selection of a nitrogen source during the process of erythromycin biosynthesis].
D004917:Erythromycin / Q000737:chemistry*; D009584:Nitrogen; D013302:Streptomyces / Q000208:ethnology*
D004917:Erythromycin; D009584:Nitrogen
ERYTHROMYCIN/chemistry; STREPTOMYCES/culture