“…Other markers that further segregate luminal cells include GATA3, ErbB3, and ALDH (Asselin‐Labat et al , ; Ginestier et al , ; Shehata et al , ) in humans, while CD14 (Shehata et al , ), c‐Kit (Lim et al , ; Regan et al , ), and Elf5 (Zhou et al , ; Oakes et al , ) segregate the murine luminal compartment. Finally, Lgr5 (Van Keymeulen et al , ; Plaks et al , ), Procr (Wang et al , ), Tspan8 (Fu et al , ), Dll1 (Chakrabarti et al , ), and Bcl11b (Cai et al , ), each further enriches basal subsets for mammary stem cells, although an exclusive mammary stem cell signature remains elusive. Nuances in protocols from tissue dissociation to preferred cell surface markers and stem/progenitor readouts contribute to some discordant findings.…”