TABLE 6.

Viral titers in organs collected from chickens at 24 h after infection with WB(L/PB1) or WB(L/PB1-V14A)

Organ or samplea	Titer (log10 EID50/ml)b
	WB(L/PB1)			WB(L/PB1-V14A)
	Animal 1	Animal 2	Animal 3	Animal 1	Animal 2	Animal 3
Pancreas	3.32	2.53	2.53	0.53	2.20	<0.20
Spleen	4.87	3.20	3.20	1.07	3.20	<0.20
Muscle**	3.20	2.32	2.38	<0.20	1.20	<0.20
Liver*	4.07	2.87	3.32	0.70	2.32	<0.20
Bursa of Fabricius	3.20	2.32	1.70	0.32	2.38	<0.20
Trachea*	4.02	3.53	2.87	0.32	2.32	<0.20
Lung	4.45	3.53	3.20	0.53	4.07	<0.20
Kidney	4.38	2.32	2.53	0.53	2.20	<0.20
Heart	4.53	3.20	3.32	<0.20	3.32	0.53
Comb	3.02	2.87	2.45	<0.20	3.07	<0.20
Wattle	3.20	3.20	3.20	<0.20	2.53	<0.20
Brain	3.87	3.87	2.32	<0.20	2.32	<0.20
Duodenum	3.53	2.87	2.07	0.53	2.20	<0.20
Rectum	3.87	2.20	2.20	<0.20	1.87	<0.20
Blood	1.32	0.87	0.32	<0.20	0.53	<0.20
Tracheal swab*	1.70	1.32	<0.20	<0.20	0.32	0.32
Cloacal swab	0.70	2.32	<0.20	<0.20	<0.20	<0.20

^aAsterisks indicate statistically significant differences in viral titers between WB(L/PB1) and WB(L/PB1-V14A), as determined by Welch's t test (*, P < 0.05; **, P < 0.01).

^bThe detection limit was <0.20 log₁₀ EID₅₀/ml.