Detection of EBV in the liver of rabbit 419. Scattered EBER-positive cells were noted in the liver of all 3 animals that survived the cyclosporin A treatment. However, the EBER-positive cells were limited in number and dispersed within the portal tract regions only and there was no evidence of infection of hepatocytes (A). Morphologically, EBER-positive cells were typically large lymphocytes (B). Negative controls using sense probe were consistently negative (C).