Virus particles and virus nucleocapsids in the cytoplasm of an oligodendrocyte in the midbrain of a BALB/c mouse, 5 days following i.p. infection with an avirulent strain of SFV. Electron micrograph, ×15,000. Courtesy of Professor B. J. Sheahan, Veterinary Sciences Centre, UCD School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Ireland.
