Lymphoproliferative disease, patient I. (a) Biopsy of the liver at 91 days reveals a fairly uniform population of cells that obscure all portal landmarks and spills over into the lobule. Giemsa, × 110. (b) The lymphoproliferative reaction was of recipient phenotype. Recipient specific antibody (R) HLA-A3 stains most cells, whereas the donor specific antibody (D) Bw4 leaves the cells unstained. × 200. (c) Although immunoglobulin cells predominate, T cells, as demonstrated by UCH-l, are well represented in the lesion. × 200. (d) The calcific rim is seen around the ghost cells of what appears to be infarcted lymphoproliferative disease at day 137. × 180.