Welcome to the Fluorescent Microsphere Resource Center (FMRC). The FMRC has evolved in response to the need for non-radioactive methods to measure regional blood flow. The primary purpose of the FMRC is to facilitate communications and disseminate information about microsphere methods in general and fluorescent microspheres in specific. A secondary purpose is to assist with the development and validation of newer methods. We believe these goals can be best accomplished by creating a forum for scientists to freely exchange ideas. There is a great deal of information at this site. Please make yourself at home. Visit the different areas and contact us if you have any questions or suggestions.