Overall “Cluster 3” cell lines (red names, Figure 2) showed a good representation of gene signatures identified for “Apocrine”, G3.TN.Tumour” and high-grade breast carcinomas, while “Cluster 2” cell lines exhibited high similarities with the “Stroma”, “Mammosphere” and “CD24.CD44” expression patterns (orange names, Figure 2). This evidence concerns the gene CD44 and neoplasm.