Fig. 1

Electron micrographs of the five Tunturi virus isolates: A Tunturi 1, B Tunturi 2, C Tunturi 3, D Tunturi 4, E Tunturi 5. Virus particles were stained with Vitroease (in A, B, E) or 3% (w/v) uranyl acetate (in C and D). Scale bar in A, 200 nm, for all sections