Fig. 4

Lyoplate screen identifies novel luminal progenitor markers. A Analysis of variability in expression of 12 surface markers enriched in the luminal progenitor population. Bar charts show percentage of positive marker cells in each epithelial/stromal population, all error bars represent SEM. n = 3–5 independent human breast donor samples. B Bar chart showing the colony-forming ability of the luminal progenitor population from positive and negative surface marker expressing cells. n = 3–5 independent human breast donor samples, all error bars represent SEM. Statistical significance was calculated using two-tailed t test. Statistically significant differences are indicated by asterisks. * P < 0.05, ** P < 0.001