title: Paradoxical effect of penicillin in vivo.
mesh_terms: D004697:Endocarditis, Bacterial / Q000188:drug therapy*; D005839:Gentamicins / Q000627:therapeutic use*; D006801:Humans; D007223:Infant; D008297:Male; D010406:Penicillins / Q000627:therapeutic use*; D013290:Streptococcal Infections / Q000188:drug therapy*
chemical_list: D005839:Gentamicins; D010406:Penicillins