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. 2015 Aug 12;10:167. doi: 10.1186/s13014-015-0473-x

Fig. 5.

Fig. 5

ELISA from cell culture supernatants showing OPN-concentrations under normoxic (N = 21 % O2) and hypoxic (H = 0.1%O2) conditions 24 h and 48 h after irradiation with 0, 2 and 8 Gy in U251 (a) and U87 (b) glioblastoma cell lines. *marks significant differences between normoxic and hypoxic conditions with p < 0.05 for 24 and 48 hours