[Biosynthesis of vitamin B 12 by soil actinomycetes].
D012988:Soil Microbiology; D013302:Streptomyces / Q000378:metabolism*; D014805:Vitamin B 12 / Q000096:biosynthesis*
D014805:Vitamin B 12
Biosyntez vitaminu B 12 hruntovymy aktynomitsetamy.