Fig. 5.
The expression level of Fas antigen on hematopoietic progenitor cells. The mice were inoculated with 1 × 105 PFU of MCMV. On various days after infection, as shown in the figure, the mice were killed in order to remove their bone marrow cells. Using flow cytometry, the expression level of Fas on these cells was examined using either the Lin−c-kit+ (upper panels) or Lin− Sca-1+ (lower panels) cells. The number of logarithm peak intensity channels (log PI) was described in the figure.