| Literature DB >> 16557708 |
Abstract
Two proteins have been purified from culture filtrates of Mycobacterium tuberculosis, H(37)Ra strain by a procedure combining gel filtration, diethylaminoethyl (DEAE)-cellulose chromatography, and zone electrophoresis. The two proteins are similar in molecular weight but differ slightly in charge. The faster migrating protein, designated a(1), is not antigenic. The slower migrating protein, designated a(2), is antigenic both with respect to antisera and as a skin-testing antigen.Entities:
Year: 1970 PMID: 16557708 PMCID: PMC415872 DOI: 10.1128/iai.1.2.164-168.1970
Source DB: PubMed Journal: Infect Immun ISSN: 0019-9567 Impact factor: 3.441