This contribution draws attention to the circulation of materialities and persons as a central feature in the constitution of experimental cultures. The protein and ribosome research at the Max Planck Society (MPG)—with a main focus on the research conducted by Brigitte Wittmann‐Liebold at the Max Planck Institute for Molecular Genetics—serves as an example to highlight some of the central conditions that determined the material circulation in molecular biology: the very organizational framework of gender and economics. In doing so, this contribution (...) argues for a historical narrative that stresses the conditions facilitating the circulation of technologies, materials, and personnel. Histories of this kind contribute to an integrated view of the scientific, technological, social, political, economic, and cultural specificities of experimental cultures. (shrink)