Blood Systems Research Institute (BSRI) is dedicated to advancing blood safety worldwide through scientific research, educati ... on and the promotion of evidence-based policies. Established more than 50 years ago, BSRI, a research division of Blood Systems, Inc., has become a world-renowned institute engaged in research ranging from blood donor epidemiology to cellular therapy to virus discovery. Following the tradition of our founder, Herbert Perkins, MD, BSRI continues under the leadership of Director, Michael P. Busch, MD, PhD, to support the education and training of the next generation of researchers through fellowships, internships, mentoring and classes conducted in San Francisco and around the world. We encourage you to explore our site for information and details of our past, present and current research conducted by our distinguished investigators and staff. read more