MRC1 and B-cell chronic lymphocytic leukemia: In cells isolated from the dura matter of CLL- and PBSL-treated mice investigated by flow cytometry, a decrease was observed in the proportion of two dural macrophage subsets (CD45+CD11b+CD206+ F4/80+ and CD45+CD11b+CD206+F4/80–), but not in the CD45+CD11b+CD206– F4/80+ subset (Figure 1C).