Task: Answer Verification
Input (English): Question: Does autocrine VEGF/VEGFR1 signaling in a subpopulation of cells associate with aggressive osteosarcoma?
Answer: Aggressive osteosarcoma phenotypes are mediated by autocrine VEGF/VEGFR1 signaling and improved stratification measures and novel anti-angiogenic strategies may benefit this specific tumor type.
Output (English): yes