Figure 1. CCR5-deficient recipients acutely reject single class I MHC-disparate heart grafts.
Groups of wild-type C57BL/6 (— n = 8) and B6.CCR5−/− (--- n = 7) mice received cardiac allografts from B6.Kd donors. (A) Graft survival was monitored daily by abdominal palpation and rejection confirmed by laparotomy. (B) On day 10 post-transplant, B6.Kd allografts were harvested from randomly selected wild-type and B6.CCR5−/− recipients. Methanol-fixed sections were prepared and stained with hematoxylin and eosin. Prepared frozen sections were stained to detect the presence of CD4 and CD8 T cells and Ly-6G+ cells that are primarily neutrophils. Sections shown are representative of 3–4 grafts from each group. Magnification, 200×.