β₂ integrins are required for skin homing of primed T cells but not for priming naive T cells
J. Clin. Invest. Stephan Grabbe, et al. 109:183 doi:10.1172/JCI11703 [Go to this article.]

Figure 3
ACD in CD18^–/– mice. (a) Histology (hematoxylin and eosin staining; original magnification, ×200) and (b) immunohistochemistry (original magnification, ×400) of OXA-challenged ears from sensitized CD18^–/– and WT control mice, obtained 30 hours after challenge with 0.5% OXA. Antibodies were used to detect the following leukocyte subsets: cytotoxic T cells (detected with anti-CD8), monocytes and macrophages (detected with anti–ER-HR3), granulocytes (detected with anti–Gr-1), and activated macrophages and DCs (detected with anti–I-A).