Figure 2

Linear correlations between normoxic and hypoxic conditions exist for VEGF and group by tumor type. Fifty cell sources (45 primary tumor cultures and 5 immortalized cell lines) were evaluated for VEGF expression measured by ELISA-based assay. Linear correlations exist between cells grown in normoxic and hypoxic conditions (Table 2). The larger graph divides the specimens by tumor type, while the inset combines all data sets.