Bio-Bridge Science Inc., a biotechnology company, focuses on the commercial development of biological products such as vaccines for the prevention and treatment of human diseases, and on the production materials used in producing vaccines. Its products under development include an HIV vaccine, a vaccine to prevent AIDS; a colon cancer therapeutic vaccine; and an HPV vaccine to prevent cervical cancer. The company also sells bovine serum and cell culture media, which are both materials used in vaccine production and scientific research. Bio-Bridge Science Inc. is headquartered in Oak Brook, Illinois and has subsidiaries in China.