Table 1.
Sample no. | ND50 for antibody-negative sera† | Sample no. | ND50 for antibody-negative sera‡ | Sample no. | ND50 for anti-Y4 sera | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Test 1 | Test 2 | Test 3 | Test 1 | Test 2 | Test 3 | Test 1 | Test 2 | Test 3 | |||
1 | 10 | 16 | 10 | 1 | 13 | 10 | 10 | 1 | 12,589 | 15,848 | 7,943 |
2 | 13 | 20 | 20 | 2 | 25 | 16 | 20 | 2 | 6,309 | 10,000 | 7,943 |
3 | 50 | 63 | 40 | 3 | 25 | 13 | 32 | 3 | 50,118 | 31,622 | 39,811 |
4 | 13 | 16 | 12 | 4 | 32 | 40 | 40 | 4 | 7,943 | 10,000 | 12,589 |
5 | 63 | 79 | 50 | 5 | 126 | 100 | 63 | 5 | 31,622* | 10,000 | 10,000 |
6 | 32 | 25 | 40 | 6 | 100 | 79 | 79 | 6 | 5,012 | 6,309 | 10,000 |
7 | 126 | 79 | 63 | 7 | 100 | 79 | 25* | 7 | 15,849 | 19,953 | 15,849 |
8 | 100 | 126 | 79 | 8 | 63 | 79 | 50 | 8 | 25,119 | 25,119 | 39,811 |
9 | 32 | 50 | 63 | 9 | 100 | 100 | 126 | 9 | 63,096 | 79,433 | 19,953* |
10 | 13 | 16 | 10 | 10 | 40 | 32 | 32 | 10 | 10,000 | 12,589 | 15,849 |
Sera collected from 1-day-old ducklings.
Sera prepared from 14-days-old ducklings that had been inoculated with DMEM at 7 days of age.
Outside ± 3-fold of the median titer of three results obtained in triplicates.