title: New penicillins with extended spectrums.
mesh_terms: D000328:Adult; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D010406:Penicillins / Q000009:adverse effects / Q000627:therapeutic use*; D013329:Structure-Activity Relationship
chemical_list: D010406:Penicillins