In the initial phase, the electron microscope represented an interesting addition to the possibilities of light microscopy for most biologists and physicians, but it was not yet clear whether the immense additional effort would be worthwhile. The task of persuasion often proved more difficult than the protagonists expected. When Ladislaus MartonMarton, Ladislaus presented the first results of his electron microscopy research to the Belgian Academy of SciencesInstitute for Solid State Physics and Electron Microscopy (IFE) of the Academy of Sciences of the GDR, the bacteriologist and Nobel laureate Jules BordetBordet, Jules (1870–1961) replied that one should refrain from using the electron microscope: in his view, interpretation of light microscopy images was already problematic enough. The mistrust shown towards electron microscopy may have had another reason in Marton'sMarton, Ladislaus case. It appears he was unable to instill confidence in the new technology among medical and biological researchers and to alleviate fears of the physical and technical challenges of electron microscopy.