(A) Photomicrographs of Gr-1 (A1), RIP3 (A2), and DAPI staining in the MCMV-injected eye of an IS Rip3+/+ mouse at day 7 p.i. As shown in the merged image (A3), a few Gr-1–stained neutrophils were observed in the inner retina but no RIP3 staining was detected in Gr-1–stained cells. (B) Photomicrographs of CD3 (B1), RIP3 (B2), and DAPI staining in the MCMV-injected eye of an IS Rip3+/+ mouse at day 7 p.i. As shown in the merged image (B3), a few CD3-stained T cells were found in the inner retina and some also stained positive for RIP3. (C) Photomicrographs of GFAP (C1), RIP3 (C2), and DAPI staining in the MCMV-injected eye of an IS Rip3+/+ mouse at day 7 p.i. As shown in the merged image (C3), many RIP3-stained cells in the inner retina of injected eyes also stained positive for GFAP, a marker for glia/Müller cells. Arrows indicate RIP3-stained glia/Müller cells in the outer nuclear layer.