Biosimilar Source Our team has over 100 years of experience in the development of marketed biologics. Our experiences in biotechnology began as early as 1980 and several of us were key to early drug development at Genentech, demonstrated by over 30 years of cumulative time at this pioneering company. Team members have played major roles in the development of seven marketed products with a cumulative market value in excess of $20 billion. The protein products and drug candidates the team has worked with encompass a variety of classes of proteins such as: growth factors, cytokines, proteins in the clotting cascade, neurotrophic factors, fusion proteins and monoclonal antibodies.