Figure 1.

Relative quantification of infectious bursal disease virus (IBDV) RNA in bursa of Fabricius of specific pathogen free (SPF) chickens and broiler chickens vaccinated with immune complex IBD vaccine (IBDV-Icx). Results are expressed as N-times increase in the viral load compared to the uninoculated control reference level. Mean values were calculated from 2 to 3 bursa samples collected on the same day and measured 3 times. The standard deviations are indicated. D — day; PV — post vaccination.