title: Selected aspects of the biosynthesis of penicillins and cephalosporins.
mesh_terms: D000164:Acremonium / Q000201:enzymology / Q000378:metabolism; D000217:Acyltransferases / Q000378:metabolism; D002511:Cephalosporins / Q000096:biosynthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D010406:Penicillins / Q000096:biosynthesis*; D010408:Penicillium chrysogenum / Q000201:enzymology / Q000378:metabolism
chemical_list: D002511:Cephalosporins; D010406:Penicillins; D000217:Acyltransferases