| pubmed-article:4969964 | pubmed:articleTitle | [On the biosynthesis of penicillin. Studies on the enzymatic activation of phenylacetic acid and phenoxyacetic acid as well as the formation of penicillin from 6-aminopenicillanic acid and activated side chain acids by mycelial homogenates and cell-free extracts of Penicillium chrysogenum]. | lld:pubmed |
