title: L-phase colonies cultured from mice infected with group A hemolytic streptococci.
mesh_terms: D000818:Animals; D003470:Culture Media; D007740:L Forms / Q000254:growth & development* / Q000302:isolation & purification; D051379:Mice; D009113:Muramidase; D010406:Penicillins; D013290:Streptococcal Infections / Q000209:etiology / Q000382:microbiology*; D013291:Streptococcus / Q000254:growth & development* / Q000302:isolation & purification; D013997:Time Factors
chemical_list: D003470:Culture Media; D010406:Penicillins; D009113:Muramidase