Figure 1From: Development of a virus neutralisation test to detect antibodies against Schmallenberg virus and serological results in suspect and infected herdsAmido black staining of control plates, for comparison of 100 vs. 500 TCID 50 and 3, 4 and 5 days of incubation. A: Back titrations of both virus concentrations, shown in the upper 3 plates, were carried out on one plate per incubation period, in 4 tenfold dilutions starting from 100 (100 TCID50, upper 4 rows) or 10-1 (500 TCID50, lower 4 rows). B: Results of the control panel of 6 positive (P) and 2 negative (N) samples, are shown in the middle row of 3 plates (100 TCID50) and the lower row of 3 plates (500 TCID50). Serum dilutions are shown above the figures. Results of back titration and average titres are given in Table 1.Back to article page