APOBEC3D and breast cancer: We examined the expression of APOBEC3D, TNFRSF14, and RAC2 in BC cells, and the PCR results showed that the APOBEC3D, TNFRSF14, and RAC2 expressions were significantly low in MCF-7 and MDA-MB-231 cells (Figures 10(a)–10(c)).