Fig. 6.

After 14 days, the single-cells suspensions from the Matrigel cultures were placed in the colony-forming cell assays to quantify the output number of progenitors. Whereas the reduction mammaplasty samples and the contralateral non–tumor-containing breast tissue cells (CBT) expanded by 3.4-fold and 2.4-fold, respectively, the tissue samples adjacent to breast tumor progenitors (TABT) did not expand on their own (1.7-fold). When co-cultured with the stromal vascular fraction (SVF) samples, the progenitors in the breast reduction samples and the contralateral non–tumor-containing breast tissue samples expanded 5.2- and 4.1-fold. However, the tissue adjacent to breast tumor progenitors expanded 7.1-fold when placed in co-cultures with stromal vascular fraction.