FLT1 and neoplasm: Although, the distributions at both time points are qualitatively different, there is a quantitative similarity in averages: ∼70% of week 3 tumor cells have an average of 2900 surface-VEGFR1/tumor cell and ∼70% of week 6 tumor cells have an average of 3200 surface-VEGFR1/tumor cell (Table 1, Fig. 5A and C).