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Angiogenic factors may play a role in the biology of neuroblastoma, a well vascularised tumour, which frequently spreads haematogenously. Therefore, we analysed expression of vascular endothelial growth factor (VEGF) in six human neuroblastoma cell lines and five primary neuroblastomas. High VEGF levels (1-3ng/10 6 cells/day) were found in the supernatant of all cell lines examined (SK-N-LO,...
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