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. 1997 Jul 21;186(2):307–312. doi: 10.1084/jem.186.2.307

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Th1 cells do not migrate faster into the CNS parenchyma than Th2 cells. Th1 (gray bars) and Th2 cells (black bars) were labeled with ⁵¹Cr and injected intravenously. After 45 and 90 h the mice were perfused and the radioactivity of several organs was determined in a gamma counter. At all time points most of the counts were found in the liver. Data are presented as a ratio between counts in the CNS and counts in the liver. One representative experiment (of three) is shown.