title: Effects of methotrexate on group A beta hemolytic streptococci and streptococcal infection.
mesh_terms: D002648:Child; D004352:Drug Resistance, Microbial; D006801:Humans; D007938:Leukemia / Q000150:complications / Q000188:drug therapy / Q000382:microbiology*; D008727:Methotrexate / Q000494:pharmacology* / Q000627:therapeutic use; D012189:Retrospective Studies; D018805:Sepsis / Q000517:prevention & control; D013290:Streptococcal Infections / Q000188:drug therapy / Q000517:prevention & control*; D013291:Streptococcus / Q000187:drug effects*
chemical_list: D008727:Methotrexate