TABLE 5

Residual folate-DTPA-111In in tumor as a function of time after administration of conjugate (2000 nmol/kg) at hour 0

Tumor-bearing mice were injected with 2000 nmol/kg of folate-DTPA-111In at time 0 and sacrificed at 8, 24, 48, 72, and 120 h. Values are presented as mean ± S.E.M. of three to four experiments (five mice per group).

Time of Sacrifice (h)
8 24 48 72 120
% injected dose/g of tumor
M109 3.28 ± 0.29 2.84 ± 0.31 1.73 ± 0.21 1.08 ± 0.09 0.4 ± 0.07
Line 01 1.72 ± 0.32 1.51 ± 0.45 1.33 ± 0.35 0.69 ± 0.13 0.32 ± 0.07
L1210A 8.25 ± 1.48 7.5 ± 1.22 6.76 ± 0.74 3.85 ± 0.32 2.64 ± 0.64