Figure 2.
RT112-TP treated with thymidine and hypoxia secrete significantly more VEGF than cells receiving either treatment alone. Triplicate wells of RT112-TP were exposed to one of four treatments (0 μM thymidine+21% oxygen; 200 μM thymidine+21% oxygen; 0 μM thymidine+0.1% oxygen; 200 μM thymidine+0.1% oxygen). Mean VEGF production (+one standard error), expressed as picogram VEGF/million cells/16 h of culture is shown. As expected, both thymidine and hypoxia alone increased VEGF secretion. However, RT112-TP treated with both thymidine and hypoxia produced significantly more VEGF than those treated with thymidine alone (P=0.0495, Kruskall–Wallis analysis), and also secreted significantly more VEGF than RT112-TP exposed to hypoxia alone (P=0.0495, Kruskall–Wallis analysis). (*=significant difference by Kruskall–Wallis analysis).