Fig. 5From: Effects of epidermal growth factor receptor kinase inhibition on radiation response in canine osteosarcoma cellsConcentration of VEGF in conditioned media 72 h post-radiation. VEGF levels are expressed as a ratio of change from control. *p < 0.05 indicates statistical significant change. Changes in VEGF levels were variable among cell lines, but significant changes occurred most consistently with combination RT plus erlotinib treatmentBack to article page