National Laboratory of Molecular Virology and Genetic Engineering;
Beijing 100052;
PRC;
PRC;
PRC Department of Microbiology and Immunology;
Sun Yat-sen University of Medical Sciences;
Guangzhou 510089.;
Department of Microbiology and Immunology;
Guangzhou 510089.;
human papillomavirus type 6 molecular cloning condyloma acuminata gene expression.;