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Supplementary Figure 1 C5aR-/- to C5aR-/- WT to WT CD3 Gr-1 Renal kidney transplants were performed in two groups using C57BL/6 (donor) and BALB/c (recipient) strain combination: i) WT C57BL/6 donors and WT BALB/c recipients (WT to WT), ii) C5aR-/- C57BL/6 donors and C5aR-/- BALB/c recipients (C5aR-/- to C5aR-/-). Renal grafts were harvested at day 6 post-transplantation. Immunochemical staining on frozen sections for CD3 and Gr-1 (magnification ×200). Representative images of 3 grafts were shown.