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3. Characterization of the new Chlamydia agent, TWAR, as a unique organism by restriction endonuclease analysis and DNA-DNA hybridization;Campbell;J Clin Microbiol,1987
4. Structural and antigenic analysis of Chlamydia pneumoniae.;Campbell;Infect Immun,1990
5. Unique ultrastructure in the elementary body of Chlamydia sp. strain TWAR;Chi;J Bacteriol,1987