Table S1 Length analysis of ''continuous'' Ebola virus particles. The length of 2090 EBOV particles were measured using ImageJ [52] . The values in the ''model length'' column are based on multiples of the G1 mean length. The values in the in the ''mean length'' column were calculated directly from the data. Only full particles containing a continuously packaged nucleocapsid were measured, all others (linked-nucleocapsid and empty particles) were omitted from this analysis. The terms G1-G22 indicate the number of genomes/viral particle (i.e. G22 = 22 genomes). All measurements are in mm.