title: Letter: Occurrence of a 3-methylthiomethylcephem derivative in a culture broth of Cephalosporium mutant.
mesh_terms: D000164:Acremonium / Q000378:metabolism*; D000900:Anti-Bacterial Agents / Q000096:biosynthesis* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D004586:Electrophoresis; D009154:Mutation; D013057:Spectrum Analysis; D014466:Ultraviolet Rays
chemical_list: D000900:Anti-Bacterial Agents