25 Molyneux Molyneux G G Geyer Geyer FC FC Magnay Magnay FA FA McCarthy McCarthy A A Kendrick Kendrick H H Natrajan Natrajan R R Mackay Mackay A A Grigoriadis Grigoriadis A A Tutt Tutt A A Ashworth Ashworth A A Reis-Filho Reis-Filho JS JS Smalley Smalley MJ MJ BRCA1 basal-like breast cancers originate from luminal epithelial progenitors and not from basal stem cells BRCA1 basal-like breast cancers originate from luminal epithelial progenitors and not from basal stem cells Cell Stem Cell. This evidence concerns the gene BRCA1 and breast carcinoma.