title: [Trial in isolation of native M protein from the cell wall of Streptococcus type A].
mesh_terms: D000942:Antigens, Bacterial / Q000302:isolation & purification*; D001426:Bacterial Proteins / Q000302:isolation & purification*; D002473:Cell Wall / Q000032:analysis*; D013297:Streptococcus pyogenes / Q000032:analysis*
chemical_list: D000942:Antigens, Bacterial; D001426:Bacterial Proteins