title: Simplified method for obtaining cell wall tuberculins from mycobacteria.
mesh_terms: D000818:Animals; D001431:Bacteriological Techniques; D002473:Cell Wall / Q000032:analysis*; D002498:Centrifugation; D003851:Deoxyribonucleases; D006168:Guinea Pigs; D005779:Immunodiffusion; D008722:Methods; D009169:Mycobacterium tuberculosis / Q000032:analysis*; D012260:Ribonucleases; D012882:Skin Tests; D013045:Species Specificity; D014357:Trypsin; D014373:Tuberculin / Q000302:isolation & purification*
chemical_list: D014373:Tuberculin; D003851:Deoxyribonucleases; D012260:Ribonucleases; D014357:Trypsin