title: Who do they think they are? Wnt-responsive cells reveal their family trees.
abstract: The nature of stem and progenitor cells in the mammary epithelium, and the relevance of cleared fat pad transplantation as a functional assay for them, has been thrown into doubt by recent lineage-tracking studies. Now two new studies based on tracking the progeny of Wnt-responsive cells are starting to help make sense of this fascinating problem.
authors.forename: Liliana
authors.initials: L
authors.lastname: Ordonez
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Smalley
mesh_terms: D000273:Adipose Tissue / Q000166:cytology*; D000818:Animals; D060466:Axin Protein / Q000235:genetics; D004847:Epithelial Cells / Q000166:cytology; D005260:Female; D008321:Mammary Glands, Animal / Q000166:cytology*; D051379:Mice; D013234:Stem Cells / Q000166:cytology; D051153:Wnt Proteins / Q000235:genetics*; D060449:Wnt Signaling Pathway / Q000502:physiology*
chemical_list: D060466:Axin Protein; C111729:Axin2 protein, mouse; D051153:Wnt Proteins