Performing intraductal injections of lentiviral vectors expressing Cre-recombinase in Brca1F/F;Trp53F/F (B1P) female mice generated tumours with long latency, which were morphologically similar to another GEMM model for ILC that had been described using the whey acidic protein (Wap) gene promoter [15]. Here, CCL27 is linked to neoplasm.