We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitlePolyketide and nonribosomal peptide antibiotics: modularity and versatility.AuthorsWalsh CTPublicationScience (New York, N.Y.), 2004, Vol 303, Issue 5665, p1805ISSN1095-9203Publication typearticleDOI10.1126/science.1094318