Table 4. Pathological microscopic score for all the animals from Experiment II based on BIP-compatible lesions.

BIP was assessed by a semi-quantitative scoring (0–3, indicating lack of, mild, moderate or severe pneumonia lesions, respectively).

Group	Animal Id	Dpi	BIP scoring
A: Unvaccinated group	1	7	2
	2		2
	5		0.5
	3	14	1.5
	4		3
	6		0.5
B: pCDNA3.1(+)-VC4-flagellin vaccinated group	7	7	3
	9		2
	12		3
	8	14	0.5
	10		1
	11		2

Abbreviations: BIP = broncho-interstitial pneumonia; dpi = days post-inoculation; Id = identification.