title: Recurrent infection associated with penicillin-tolerant group B streptococci: a report of two cases.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology; D001922:Brain Abscess / Q000188:drug therapy / Q000382:microbiology; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000188:drug therapy* / Q000382:microbiology; D008297:Male; D008826:Microbial Sensitivity Tests; D010403:Penicillin Resistance; D010406:Penicillins / Q000494:pharmacology*; D012008:Recurrence; D013290:Streptococcal Infections / Q000188:drug therapy* / Q000382:microbiology; D013292:Streptococcus agalactiae / Q000187:drug effects*
chemical_list: D010406:Penicillins; D000667:Ampicillin