Chromatographic procedure for the preparation of M protein testing antigens.
D000941:Antigens; D002845:Chromatography; D008747:Methylcellulose; D011506:Proteins / Q000378:metabolism*; D013291:Streptococcus / Q000276:immunology*
D000941:Antigens; D011506:Proteins; D008747:Methylcellulose