Immunohistochemistry (IHC) analysis revealed that all Apc+/1572T mammary adenocarcinomas (n = 12) encompass luminal and myoepithelial cell types together with areas of squamous metaplasia (Figure 4D–4E, Figure 4G–4H, and Figure 4J–4K). The gene discussed is APC; the disease is breast adenocarcinoma.