AIF1 and cancer: Likewise, no significant difference was found in the number of Iba-1+ cells in the ipsilateral dorsal horn of cancer-bearing rats, compared with sham (F1,16 = 2.45, p > 0.05; n = 5, Figure 3), demonstrating that even in the late stages of CIBP, we did not detect microglial reaction in female rats innoculated with Walker 256 cancer cells.