Table 2. CN CFUs in the lungs and the brains of A/JCr mice i.v. infected with 105 CN organisms and treated with 188Re-18B7 mAb 24 h after infection.
No. of cfu/g of tissue, × 104
|
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---|---|---|---|---|
Organ | Untreated mice and treated with unlabeled 18B7, 50 μg | 50 μCi of 188Re-18B7 | 100 μCi of 188Re-18B7 | 200 μCi of 188Re-18B7 |
Lungs | 550 (47)* | 41 (6) (P = 0.001) | 21 (5) (P = 0.001) | 3.3 (2) (P = 0.001) |
Brains | 11 (5) | 0.10 (0.05) (P < 0.001) | 0.8 (0.1) (P = 0.002) | 1.1 (0.1) (P = 0.002) |
Mice were killed 48 h after the treatment with 188Re-18B7 (188Re; t1/2 = 2.8 d); the colony counts for 100 and 10 times dilutions for the lungs and brains, respectively, are given. Numbers in parentheses are SD.
P values were calculated by the Wilcoxon test, and the groups treated with 188Re-18B7 were compared with the combined group of untreated mice and those treated with unlabeled 18B7 mAb.