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. Author manuscript; available in PMC: 2012 Apr 12.
Published in final edited form as: J Mammary Gland Biol Neoplasia. 2008 Apr 25;13(2):235–246. doi: 10.1007/s10911-008-9080-x

Figure 2.

Figure 2

Heregulin-mediated growth inhibition of HER4 positive breast cancer cells. Representative histograms of human SUM44 or BT-474 cells cultured in serum-free medium with or without HRG for 72 h then stained with propidium iodide. In addition, cells were labeled with BrdU for 6 h, stained with an anti-BrdU antibody, and analyzed by flow cytometry. The percentages of the cell population in G1, G2/M phases of the cell cycle and BrdU-positive cells are shown.