RBBP8 and breast cancer: Also, as anticipated, immunoblot analysis confirmed the absence of full-length Ctip protein in mammary tumors that arose with delayed kinetics in Ctipco/−/p53co/+/Wapcre/+ females (Figure 5H, lanes 3–5), but not in the rapidly developing tumors of Ctipco/+/p53co/+/Wapcre/+ mice (lanes 1 and 2).