ABG Biotech, Inc. is a San Diego-based company that specializes in manufacturing antigens and antibodies. With over 30 years of experience, we offer a range of cost-effective products and services, including recombinant antigens, recombinant antibodies, DIY ELISA components, and antigen/antibody expression services. Our recombinant proteins are derived from E.coli, insect cells, and mammalian cells.