Effects of HIF-1 inhibition by chetomin on hypoxia-related transcription and radiosensitivity in HT 1080 human fibrosarcoma cells oleh Baier Kurt, Schwab Franz, Fleischer Markus, Beyer Melanie, Katzer Astrid, Diehlmann Désirée, Said Harun M, Loeffler Jürgen, Staab Adrian, Einsele Hermann, Flentje Michael, Vordermark Dirk