Blood component production. Technician with a bioreactor used for producing blood components. Bioreactors are devices that maintain a specific environment to allow organisms or their derivative substances to undergo chemical processes. Here it is being used to culture various blood components such as plasma proteins, growth and coagulation factors, albumin, and immunoglobulin. Photographed at the Laboratoire de Fractionnement et des Biotechnologies (Laboratory of Fractionation and Biotechnology, LFB), Paris, France.