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. Author manuscript; available in PMC: 2014 Jun 28.
Published in final edited form as: J Nat Prod. 2013 Jun 3;76(6):1175–1181. doi: 10.1021/np400320r

Figure 4.

Figure 4

Effects of 1–9 on VEGF protein expression. T47D cells were exposed to 1–9 and 1,10-phenanthroline (phen) as specified at the concentration of 10 μM for 16 h. The levels of secreted (A) and cellular VEGF proteins (B) were determined by ELISA and normalized to the quantity of cellular proteins. “C” represents untreated medium control. Data shown are average + standard deviation, pooled from two independent experiments (n = 3). An asterisk (*) indicates p < 0.05 when compared to the untreated control.