hybridization for the detection of EBV in the spleens of infected rabbits. EBV infected cells were present in the spleens of 3 of the 4 rabbits that survived the 15 day CsA treatment (Panel A). Rabbits 416 and 419 had the most extensive infection. EBER-positive cells were heavily distributed in most parts of the spleens of these animals. No staining was seen in the corresponding negative controls (Panel B).