In contrast to what we observe in the tumor proteomes, in the MCF7 E-cadherin null model, we observed an increase in the expression of CDH3 (P-cadherin) (Figure 4B), perhaps an example of “cadherin switching” specific to this model (Cavallaro et al., 2002, Wheelock et al., 2008). This evidence concerns the gene CDH1 and neoplasm.