title: [The classic penicillins are holding the line].
mesh_terms: D006090:Gram-Negative Bacteria / Q000201:enzymology; D006666:History of Medicine; D010403:Penicillin Resistance; D010406:Penicillins / Q000096:biosynthesis / Q000627:therapeutic use*; D010827:Physiology / Q000266:history
chemical_list: D010406:Penicillins
vernacular_title: Die klassischen Penizilline halten die Stellung.