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Immunohistology of synovitis. Serial sections of a finger joint of a 5-month-old SKG mouse were stained for CD4 (A), CD8 (B), B220 (C), Gr-1 (D), CD11b (E), I-A/I-E (F), CD49d (G), or VCAM-1 (H) with staining control (I). Arrow indicates vasculature. Original magnification, ×20.
