Dear Colleagues, The *abstract submission deadline* for the 5th Workshop on Molecular Communications in Tampere, Finland, has been *extended *to the 15th of March of 2020. Therefore, we would like to invite you to submit contributions within the following general areas: • Synthetic Biology • Systems Biology • Pharmacology • Inter/Intra Cellular Communication • Chemical Networks • Communication Engineering Details on the Call for Papers can be found on the Workshop website https://molecularcommunications.eu. Please, extend this invitation to any colleagues of yours who may be interested. Best Regards, Maximilian Schäfer and Mauro Femminella MolCom 2020 TPC Co-Chairs PS: We apologize for possible multiple postings, which we made all our efforts to avoid