《抗菌药物合理应用规范及进展》(ppt　65).rar The　time　may　come　when　penicillin　can　be　bought　by　anyone　in　the　shops.　Then　there　is　the　danger　that　the　ignorant　man　may　easily　under-dose　himself　and　by　exposing　his　microbes　to　non-lethal　quantities　of　the　drug　make　them　resistant.＂　 The　time　may　come　when　penicillin　can　be　bought　by　anyone　in　the　shops.　Then　there　is　the　danger　that　the　ignorant　man　may　easily　under-dose　himself　and　by　exposing　his　microbes　to　non-lethal　quantities　of　the　drug　make　them　resistant.＂　 The　time　may　come　when　penicillin　can　be　bought　by　anyone　in　the　shops.　Then　there　is　the　danger　that　the　ignorant　man　may　easily　under-dose　himself　and　by　exposing　his　microbes　to　non-lethal　quantities　of　the　drug　make　them　resistant.＂　 The　time　may　come　when　penicillin　can　be　bought　by　anyone　in　the　shops.　Then　there　is　the　danger　that　the　ignorant　man　may　easily　under-dose　himself　and　by　exposing　his　microbes　to　non-lethal　quantities　of　the　drug　make　them　resistant.＂