In vivo migration assays of 164T2 T-lymphoma cells in normal and E-, L-, and P-selectin-deficient mice. Cells were labeled in vitro with ¹¹¹In, and 10⁶ labeled cells were subsequently injected intravenously into mice. Radioactivity was counted in the organs at different times and was expressed as the percentage of total radioactivity injected, as described previously.³²  Data represent the mean values of duplicates.