title: [Questions and answers on the class effect].
authors.affiliation: Departamento de Microbiologia I. Facultad de Medicina, Universidad complutense de Madrid, Espana.
authors.forename: José
authors.initials: J
authors.lastname: Prieto
authors.forename: Carmen
authors.initials: C
authors.lastname: Ramos
mesh_terms: D000900:Anti-Bacterial Agents / Q000145:classification* / Q000494:pharmacology / Q000627:therapeutic use; D000890:Anti-Infective Agents / Q000494:pharmacology; D001424:Bacterial Infections / Q000188:drug therapy; D004351:Drug Resistance; D024901:Drug Resistance, Multiple, Bacterial; D004917:Erythromycin / Q000494:pharmacology; D024841:Fluoroquinolones; D006193:Haemophilus influenzae / Q000187:drug effects; D006801:Humans; D007769:Lactams; D008826:Microbial Sensitivity Tests; D013296:Streptococcus pneumoniae / Q000187:drug effects
chemical_list: D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents; D024841:Fluoroquinolones; D007769:Lactams; D004917:Erythromycin