Fig. 4: Antibody cross‐reactivity among LASV lineages and related Old World mammarenaviruses.

GP of the LASV lineages I, II, IV, V, and VII or LCMV were vectorially expressed in Vero E6 cells. After fixation, cell monolayers were incubated with the rabbit immune sera Rb#347_D77 and Rb#350_D77, or, as a control, the human monoclonal antibody 37.7H, and analyzed by indirect immunofluorescence microscopy. Cell nuclei were visualized with DAPI, and merged images are shown. Scale bars, 20 µm.