As shown by qPCR analysis, expression of known regulators of normal and tumor mammary epithelial cell fate and function, namely Ehf[43], Elf5[44], Etv5[45], and Foxc1[46] is stronger in the CD24ahigh subset (Figure 13B), whereas the CD24alow subset is distinguished by a higher expression of the Twist2 gene (Figure 13B), whose product has a function in EMT [38]. The gene discussed is ELF5; the disease is neoplasm.