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Table 1 Changes of neutralizing antibody titer with different inoculation routes and different doses in ducks.

From: Induction of immune responses in ducks with a DNA vaccine encoding duck plague virus glycoprotein C

Days post inoculation Serum neutralizing (SN) titera
  Immune groups Control groups
  Route and dose of inoculation    
  Gene gun bombardment IM pcDNA3.1(+)
100 μg
DPV attenuated vaccine 100 μl 0.85% saline 100 μl
  6 μg 3 μg 1 μg 200 μg 100 μg 50 μg    
3 1:2.34 1:2.34 < 1:2.34 < < < < <
5 1:2.37 1:2.34 < 1:2.87 1:2.34 < < 1:3.35 <
7 1:2.82 1:2.7 1:2.34 1:3.2 1:2.58 1:2.51 < 1:5.01 <
14 1:5.62 1:3.35 1:3.4 1:4.73 1:2.87 1:2.7 1:2.34 1:6.2 <
28 1:6.3 1:4.73 1:3.2 1:6.4 1:5.01 1:4.73 1:2.34 1:5.69 <
42 1:5.69 1:4.6 1:2.82 1:6.7 1:5.56 1:3.2 < 1:4.73 <
70 1:3.4 1:2.73 < 1:3.35 1:2.37 < < 1:2.82 <
  1. aDucks were immunized via IM or gene gun injection with DPV gC DNA vaccine. The neutralizing antibody titer represents the average of the titers from 3 serum samples standard error. The titer in each group was expressed as the mean ± SD of all specimens in each group.