Fig. 2.

In vivo radiation increased the percentage of CD24⁺CD29⁺ positive cells from MCF-7 cells but not uncultured MECs. (A) Freshly digested MECs were analyzed for lin⁻CD24⁺CD29⁺ 48 h after in vivo irradiation. The CD24⁺CD29⁺ population is sensitive to radiation. (B) MCF-7 cells were irradiated and analyzed for lin⁻CD24⁺CD29⁺ by flow cytometry. Radiation selectively decreased the lin⁻CD24⁺CD29^lo fraction cells (P = 0.003 for 0 Gy vs. 2 Gy, and P = 0.0002 for 0 Gy vs. 4 Gy).