| 02/24-Present | Prof. Qinfeng Xu, Shaanxi University of Science & Technology, China |
| 06/22-11/23 | Karolina Zielonka, Polish Academy of Sciences, Poland |
| 04/22-07/22 | Giovanni Ferrari, University of Padova, Italy, University of Ulm |
| 06/22-09/22 | Dr. Kateryna Trofymchuk, GATTAquant GmbH |
| 08/20-08/23 | Dr. Florian Selbach, GATTAquant GmbH |
| 08/19-08/21 | Dr. Henri Franquelim, Max Planck Institute of Biochemistry, Martinsried |
| 08/19-11/19 | Luciano Masullo (AK F. Stefani), Universidad de Buenos Aires, Argentina (DAAD Short-Term Grant) |
| 05/19-08/19 | Aleksandra Bednarz, Warsaw University of Technology, Poland |
| 05/19-06/19 | Prof. Fernando Stefani, Universidad de Buenos Aires, Argentina (Georg Forster Research Award, Alexander von Humboldt Foundation) |
| 04/19-08/19 | Dr. Shane Scott, McGill University, Montréal, Canada (DFG Grant to Support the Initiation of International Collaboration) |
| 03/18-05/18 | Prof. Fernando Stefani, Universidad de Buenos Aires, Argentina (Georg Forster Research Award, Alexander von Humboldt Foundation) |