Figure 5From: Experimental co-infection of variant infectious bursal disease virus and fowl adenovirus serotype 4 increases mortality and reduces immune response in chickensBiochemical index levels in the serum of infected chickens. Chickens were inoculated with variant IBDV-ZD-2018–1 and/or FAdV-4-HB1501, and the serum levels of various biochemical indices were measured. a,bBars with no common superscript are significantly different (p < 0.05).Back to article page