Extended Data Fig. 2: High-risk epithelial strains with low LEp populations.

Flow cytometry analysis of passage four epithelia stained for (a-b) CD271(MEp marker) and MUC1(LEp marker) or (c-d) CD271 and CD133 (LEp marker) from HR women carrying (a) BRCA1 or (b-d) BRCA2 mutations.