| http://www.w3.org/ns/prov#value | - Activators of angiogenesis include growth factors, such as vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF), and hypoxic conditions that activate hypoxia-inducible factor-1 (HIF-1) which in turn upregulate angiogenic proteins as well as angiogenic oncogenes [9].The transcription factor TWIST is known to induce an embryonic event termed epithelial-mesenchymal transit
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