The German Research Foundation (DFG) has extended the funding for a Collaborative Research Center (CRC) based at Freie Universität Berlin, "Multivalency as Chemical Organization and Action Principle: New Architectures, Functions and Applications." CRC 765 has been running successfully since 2008.Tthe participating scientists explore the fundamental understanding of multiple interactions between large molecules and living cells and viruses. Chemists, biologists, medical researchers, and mathematicians work together in the interdisciplinary project. The Robert Koch Institute has been added as a new partner in the third funding period. The scientists aim to investigate in detail the blockade of influenza viruses by multivalent scaffold architectures. The spokesperson for the CRC is Prof. Dr. Rainer Haag from the Institute of Chemistry and Biochemistry, Freie Universität. The grants for the 2016 to 2019 period amount to a total of eight million euros.