PhD students Letícia Hudecová and Emil Bečka undertook a short two-week internship (February 23 – March 6, 2026) with the research group of Doctor Ján Frič at the International Clinical Research Center (ICRC), which is a joint workplace of St. Anne’s University Hospital and the Faculty of Medicine of Masaryk University in Brno, Czech Republic. This internship was realized thanks to collaboration within the BEATSepis consortium. The aim was to learn how to work with a 2-photon microscope, which can be used to visualize 3D structures of neutrophil extracellular traps (NETs). In the first part, they focused on incubating neutrophils with organoids and subsequent induction of NETosis. In the second part of the internship, they monitored the distribution and population of myeloid lineage cells, mainly neutrophils and erythrocytes.